Energie rinnovabili Renewable energy - Soluzioni di tenuta
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Soluzioni di tenuta
Seals solutions
Energie rinnovabili
Renewable energy
Anelli di tenuta per alberi rotanti - V-Rings - Profili in gomma
Rotary shaft seals - V-Rings - Rubber parts
Energie rinnovabili 2
Renewable energy 3
Impianti eolici - wind power plants 4
Impianti idroelettrici - hydropower plants 6
Guarnizioni per movimenti rotanti - Rotary shaft seals 8
Anelli V-rings per tenuta frontale - Axial Seals 9
Profili in gomma - Rubber profiles 10
Guarnizioni per tenute stelo - Rod seals 11
Guarnizioni per tenute pistone - Piston seals
Altri profili - Other profiles
Anelli di tenuta per alberi rotanti - Rotary shaft seals 12
Anelli V-rings per tenuta frontale - Axial seals 13
Tenute stelo - Rod seals 14
Tenute pistone - Piston seals 15
Profili di tenuta per il settore idroelettrico 16
Sealing profiles for hydropower plants
Profili di tenuta per paratoie 17
Sealing profiles for sluice gates
Materiali - Materials 18
Rivestimento speciale - Special coating 19
1
Energie rinnovabili
La sempre maggiore richiesta di consumo di energia • Il sole
elettrica è un tema ormai divenuto problematico a • L’acqua (che comprende le maree, il moto
livello mondiale sia nei paesi industrializzati, per i quali ondoso e Le correnti marine)
la domanda ha superato la capacità di produzione di • Il vento
energia, sia nel resto del mondo, per scarsità di risorse. • Le biomasse, i biogas, i biodiesel
• La geotermia
Negli ultimi anni, la ricerca di maggiori risorse quali
petrolio, carbone, gas, ecc.. è cresciuta di pari passo Le energie rinnovabili assumono sempre maggiore
con lo studio di nuove fonti energetiche di minore importanza all’interno delle economie moderne, al
impatto ambientale come ad esempio vento, sole ed punto che i governi mondiali si stanno adoperando
acqua. per sfruttare al meglio queste preziose risorse, nel
rispetto dell’ambiente.
Conseguenze come l’effetto serra, i cambiamenti
climatici, l’inquinamento di suolo e acqua, causati La ricerca e lo sviluppo di impianti ottimizzati per la
dalla produzione indiscriminata di energia e fino a produzione di energia da fonti rinnovabili e a basso
qualche anno fa sottovalutati, mostrano ogni giorno costo di esercizio sono di fondamentale importanza
i loro nefasti effetti riferiti a gravi disastri ambientali per contrastare la produzione derivata da fonti
ed incalcolabili danni all’essere umano. Ecco perché tradizionali.
appare sempre più auspicabile ricorrere a fonti di
energia rinnovabile. L’efficienza e la durata degli impianti dipendono
principalmente dalla progettazione e dai
Attraverso le fonti rinnovabili ed un uso razionale comportamenti delle parti meccaniche nel corso
dell’energia, è possibile ridare equilibrio all’ambiente del tempo. Per ottenere migliori performance è
e promuovere uno sviluppo economico all’insegna essenziale che anche i dispositivi di tenuta lavorino in
dell’ecosostenibilità. modo adeguato.
Si definiscono rinnovabili quelle fonti energetiche che, La Manifattura Guarnizioni Colombo è a fianco dei
a differenza dei combustibili fossili, si rigenerano progettisti e dei manutentori proprio per garantire
almeno alla stessa velocità con cui si utilizzano e la fornitura di guarnizioni di qualità, sia in termini di
quindi non sono destinate ad esaurirsi. materiali che di prestazione.
Esse sono quelle energie che permettono un minore Nell’ambito delle Energie Rinnovabili i settori
impatto sull’ambiente ed uno sviluppo sostenibile industriali dove la Manifattura Guarnizioni Colombo
della vita sul pianeta. è presente con una propria gamma di articoli sono:
Le principali Fonti Energetiche Rinnovabili oggi • Impianti Eolici
identificate sono: • Centrali idro-elettriche
2
Renewable energy
Today the attention of most countries all over the world The main Renewable Sources identified and studied today are :
is being turned to the issue of the increasing electric
power production and consumption : in developed • Solar energy
countries, due to the fact that the actual demand has • Sea water, tides, wave motion, marine current motion
overcome the real production capability and supply, and • Wind energy
in developing countries for the limited resources. • Biomasses, Biogas, Biofuel;
• Geothermal science
Over the last years the research in new resources, such as
petrol, coal, gas, etc. has been carried out together with Renewable energies are more and more important in
the study of new low impact energy sources, such as all modern economies all over the world. In fact, the
wind energy, solar energy and water power for example. international governments are trying to obtain and take
advantage of the access to these valuable resources by
Severe problems such as greenhouse gases, climate respecting the surrounding environment.
changes, ground and water pollution, posed by an
indiscriminate energy production were considered The research and development of optimised plants
remote possibilities in the past, but now these granting a low operating and maintenance cost are
phenomena show day by day their tragic effects through very important for bearing comparison with traditional
environmental disasters and incalculable damages for energy sources.
humans. This is the reason why the use of renewable
energy is considered so useful and important. The efficiency and the durability of the plants depend
mainly on the project and the performance of all
Renewable sources, together with a more conscious mechanical parts over the years. All the sealing devices
energy consumption concept, are the key factors which should operate adequately in order to obtain better
will allow to restore a natural balance to the surrounding services from the plants.
environment and to find the right direction towards a
sustainable development. The company Manifattura Guarnizioni Colombo
supports step by step engineers and maintenance
Renewable sources, differently from fossil and petrol men by supplying high quality seals, both in terms of
derived fuels, are considered unlimited because they materials and performance.
naturally regenerate and replenish after use, so they are
not deemed to deplete. The company Manifattura Guarnizioni Colombo supplies
gaskets for the Renewable Energy field, especially for :
They promote a human sustainable development with a
low impact for the natural environment. • Wind power plants
• Hydro power plants
3
Impianti eolici - Wind power plants
ll vento rappresenta una fonte di energia pulita Wind power is a clean and renewable energy source
e rinnovabile che può rivelarsi, a breve termine, which could turn out to be competitive on a short term,
concorrenziale rispetto alle fonti tradizionali. if compared with traditional sources.
Essa è facilmente trasformabile in energia elettrica, In fact, it can be easily converted into electric power, by
sfruttando lo stesso principio di funzionamento dei following the same macchanisms guiding operations of
vecchi mulini a vento. old windmills.
La realizzazione di impianti eolici è in continua The construction of wind power plants is constantly
crescita in tutto il mondo e lo sviluppo tecnologico increasing all over the world and the technological
del settore è legato principalmente all’aumento della development in the field is linked with a longer operating
durata e dell’ affidabilità delle turbine eoliche. life and to the reliability of the turbines.
La ricerca e l’introduzione di nuovi materiali The research and the introduction of new high
performanti permette alle parti meccaniche soggette performance materials allow all the mechanical
ad usura di resistere a condizioni climatiche estreme parts subject to wear effects to bear extreme weather
sia sulla terraferma che in mare. conditions both inshore and offshore.
Nell’ottica dell’analisi e della ricerca di nuove soluzioni, In view of the analysis and research in new sealing solutions, a
un’azienda del settore deve percepire le tendenze e company operating in the field should be aware of the latest
collaborare con i progettisti. tendencies and cooperate with the engineers.
La Manifattura Guarnizioni Colombo produce da The company Manifattura Guarnizioni Colombo
anni articoli destinati ad applicazioni nel settore has produced for years items aimed at the application
eolico. La criticità dei materiali e la peculiarità in the wind power field. The peculiarity of the
delle lavorazioni impongono rigorose selezioni di materials and of the processing operations leads to
guarnizioni destinate alle applicazioni più gravose. a meticulous selection of the gaskets to be used for
heavy duty applications.
L’ azienda dispone di un ufficio tecnico di lunga
esperienza, in grado di analizzare soluzioni che Our technical department, thanks to a long experience
soddisfino le esigenze degli uffici di progettazione e gathered over the years, is in the position to analyse solutions
dei reparti di montaggio e manutenzione. for projecting, assembly and maintenance problems.
Si realizzano guarnizioni di tenuta a protezione dei The seals produced for this field are used for protecting
seguenti dispositivi: the following devices :
• cuscinetto dell’albero principale • main shaft bearings
• cuscinetti dei rotori delle pale • rotor bearings
• riduttore principale • main gearboxes
• ralle di rotazione • slewing rings
• cilindri oleodinamici di asservimento • pitch cylinders
La produzione comprende: our range includes :
• anelli di tenuta per alberi rotanti • rotary shaft seals
• v-rings • v-rings
• soluzioni composte in ptfe • composite seals in PTFE
• o-rings e back-up rings • o-rings and back-up rings
• guarnizioni per cilindri oleodinamici • hydraulic seals
• guarnizioni radiali per ralle di rotazione • radial seals for slewing rings
4
Impianti eolici - Wind power plants
Schema rotore eolico
Wind turbine cutaway
Cuscinetto albero principale Ralle di rotazione
Main shaft bearings Slewing rings
Ralle di rotazione
Slewing rings
Riduttore principale
Main gearbox
Ralle di rotazione
Slewing rings
5
Impianti idroelettrici - hydropower plants
L’energia idroelettrica è, tra le fonti rinnovabili, quella Among the renewable sources, hydropower is the most used
da più anni prodotta in tutto il mondo attraverso all over the world through the construction of huge plants.
impianti anche di grandissime dimensioni.
The modern hydropower systems can generate power
I moderni sistemi idroelettrici hanno la capacità through different flow capacity plants.
di generare energia attraverso impianti di diverse
portate. In great hydropower plants the most state-of-the-art
production and pumping systems able to grant water
Nelle grandi centrali idroelettriche si applicano accumulation into huge downstream tanks are applied
avanzati sistemi di produzione e di pompaggio in ; in these tanks this resource is re-used by the system for
grado di garantire l’accumulo di acqua in vasche granting new power generation.
di notevoli dimensioni, poste a valle; qui la fonte
energetica viene riutilizzata dal sistema per garantire This method allows to keep an energy stock, by
nuova produzione di energia. Questa tecnica maintaining a high-rate of “renewable source”.
permette lo stoccaggio di energia, così da garantire
un elevato grado di “fonte rinnovabile”. The company Manifattura Guarnizioni Colombo has
accrued a long experience in the supply of gaskets for
La Manifattura Guarnizioni Colombo vanta una hydro power plants.
lunga esperienza in forniture di guarnizioni per il
settore idroelettrico. La collaborazione con i gruppi di The cooperation with managing and maintenance
gestione e manutenzione degli impianti ha favorito la groups for the plants has allowed to enlarge the range of
creazione di una sempre più ampia gamma di articoli. items produced for the field.
L’ufficio tecnico è in grado di valutare ogni esigenza Our technical department is able to analyse every
dei clienti con competenza e professionalità. requirement with competence and expertise; the
Particolarmente rilievante è la capacità della production capability for special items which can be
Manifattura Guarnizioni Colombo di fornire pezzi supplied in low amount batches is worthy of mention.
speciali anche in pochi lotti.
The quality and the reliability of our products are
La qualità e l’affidabilità dei prodotti sono appreciated by the maintenance men who trust our
caratteristiche apprezzate dai gestori degli impianti, competence for improving efficiency and operating
che si affidano alla competenza dell’azienda per performance of the seals.
migliorare l’efficacia delle tenute e delle prestazioni
operative. For the hydropower field we can produce gaskets and seals for :
Si produce una gamma completa di sistemi di tenuta • intercepting valves
e guarnizioni per: • butterfly and ball valves
• pumping stations
• valvole di intercettazione • pressure water pipes
• valvole a farfalla e valvole a sfera • gate valves
• stazioni di pompaggio • hydraulic and oil dynamic interlocking devices
• condotte forzate
• saracinesche Our range includes:
• tutti i dispositivi idraulici e oleodinamici di
asservimento • rotary shaft seals
• vee-packing sets in cotton fabric NBR
La produzione comprende: • sealing systems for hydraulic cylinders
• flat gaskets in many materials
• anelli di tenuta per alberi rotanti • o-rings
• guarnizioni a pacco in gommatela • packings and braided packings in natural and
• sistemi di tenuta per cilindri idraulici synthetic fibres
• guarnizioni piane in ogni tipo di materiale • custom parts in rubber and plastic materials
• o-rings
• trecce e baderne in fibre naturali e sintetiche
• particolari a disegno in gomma e plastica
6
Impianti idroelettrici - hydro power plants
Schema impianto idroelettrico
Hydropower plant cutaway
Saracinesca
Gate Valve
Valvola di condotta Forzata
Penstock valve
Giunto d’espansione
Expansion joint
Saracinesca
Gate Valve
Valvola principale
Main valve
7
Guarnizioni per movimenti rotanti - Rotary shaft seals
Rotary shaft seals
G-35 G-36 G-37
G-35 R G-35 HP G-35 HPAE
G-35 M RGR G-17
8Anelli V-rings per tenuta frontale - Axial Seals
Axial seals
VA VL AX VS
RME VE RM TF
9Profili in gomma - Rubber profiles
Rubber profile
PR025 PR505 PR962
PR241 PR654 PR983
10Guarnizioni per tenute stelo - Rod seals
Rod seals
IGR/A IGR/B IGR/A/P IGR/B/P
IGR/AW IGR/BW TEOL 1 TEOL 1B
Guarnizioni per tenute pistone - Piston seals
Pistons seals
EGR/A EGR/B EGR/A/P EGR/B/P
EGR/AW EGR/BW TEOL 2 JWT
Altri profili - Other profiles
Other profiles
JWG XEH D SEAL DE D SEAL DI
D SEAL UM SEAL EGR/AM TEOL 1/R
11Anelli di tenuta per alberi rotanti - Rotary shaft seals
Item Dim. range P S T
Profiles Materials Applications
code [mm] [bar] [m/s] [°C]
NBR + fabric Max 120
FKM + fabric Max 220
10 ÷ 2500 0,5 20
HNBR + fabric Max 150
VMQ + fabric Max 180
G35
NBR + fabric Max 120
FKM + fabric Max 220
10 ÷ 2500 0,5 20
HNBR + fabric Max 150
VMQ + fabric Max 180
G36
NBR + fabric Max 120
FKM + fabric Max 220
10 ÷ 2500 0,5 20
HNBR + fabric Max 150
VMQ + fabric Max 180
G37
GTR
• iron and steel plants
NBR + fabric Max 120 • shipbuilding industry
FKM + fabric Max 220 • wind power applications
10 ÷ 2500 0,5 20
HNBR + fabric Max 150 • paper industry
VMQ + fabric Max 180 • hydropower industry
G35/R • mining industry
• cement mills
NBR + fabric Max 120
FKM + fabric Max 220
10 ÷ 2500 0,5 20
HNBR + fabric Max 150
VMQ + fabric Max 180
G35/M
NBR + fabric Max 120
FKM + fabric Max 220
10 ÷ 2500 4 20
HNBR + fabric Max 150
VMQ + fabric Max 180
G35/HP
NBR + fabric Max 120
FKM + fabric Max 220
HNBR + fabric Max 150
10 ÷ 2500 VMQ + fabric 4 20 Max 180
PTFE
G35/HPAE
Nylon
Seal ring NBR Max 120
• Hydraulic systems
G17 10 ÷ 300
Suppor- NBR + fabric
200 0,1
• Machine tools
ting ring
PTFE + glass + MoS2
PTFE + carbon
• Hydraulic cylinders
Oil seal PTFE + bronze
• Presses
RGR 10 ÷ 800 0,5 20
• Mobile hydraulics
O-ring NBR Max 120
• Machine tools
FKM Max 220
The pressure and temperature values shown in this table depend on several factors and are not valid simultaneously.
For this reason the data stated in this table are only to be taken as indicative. Please contact our technical office for further information.
12Anelli V-rings per tenuta frontale - Axial seals
Item Dim. range P S T
Profile Materials Applications
code [mm] [bar] [m/s] [°C]
VA
VL
NBR -30 ÷ 120 General, prevents dirt, dust, water
from penetrating, it can be used for
RM
FKM -30 ÷ 220 sealing grease
Max Ø ext 2500 Used in :
(moulded) HNBR -30 ÷ 150 - Iron and steel plants
-
RME 18 - Shipbuilding industry
NEO -30 ÷ 80 - Wind power applications
- Paper industry
SIL (VMQ) -50 ÷ 180 - Hydropower industry
AX - Mining industry
EPDM -30 ÷150 - Cement mills
VE
VS Max 210
NBR + steel -30 ÷ 120
TF SIL (VMQ) + steel
15
-50 ÷ 180
Hydraulic systems
Profili in gomma - Rubber profiles
Item P S T
Profiles Dim. range [mm] Materials Applications
code [bar] [m/s] [°C]
PR025
PR505
General, prevents dirt, dust, water from
penetrating, it can be used for sealing
grease
PR962 200÷2500 NBR -30÷120
Used in :
FKM -30÷220
- Iron and steel plants
HNBR -30÷150
- 18 - Shipbuilding industry
Available as : NEO -30÷80
- Wind power applications
- rubber profile EPDM -30÷150
- Paper industry
PR241 - endless moulded part VMQ -50÷180
- Hydropower industry
- Mining industry
- Cement mills
PR654
PR983
The pressure and temperature values shown in this table depend on several factors and are not valid simultaneously.
For this reason the data stated in this table are only to be taken as indicative. Please contact our technical office for further information.
13Tenute stelo - Rod seals
Item Dimensional P S T
Profile Materials Applications
code range [mm] [bar] [m/s] [°C]
• steel mills
PTFE + bronze 400
• injection moulding
PTFE + carbon 400
IGR/A 10 ÷ 1800 Seal ring
PTFE + graphite 250
presses
• forging presses
PTFE + glass 250
• extruding presses
PTFE+ glass MoS2 400 5
• hydraulic cylinders
• machine tools
O-ring • moving machines
IGR/B 10 ÷ 1800 NBR 70 Shore A -30 ÷ 120
• valves for hydraulic and
FKM 70 Shore A -10 ÷ 200
pneumatic circuits
Seal ring
IGR/A/P 100÷ 1200 PTFE + bronze
PTFE+ glass MoS2
• Hydraulic cylinders for
NBR 70 Shore A -30 ÷ 120
O-ring 600 5 special applications
FKM 70 Shore A -10 ÷ 200
• heavy industry
High performance Ther-
IGR/B/P 100÷ 1200 moplastic Material
Back-up ring
PTFE + glass MoS2 300
IGR/AW 300 ÷ 1800 Seal ring PTFE+ carbon 400
• Hydraulic cylinders for
5 special applications
• heavy industry
IGR/BW 300 ÷ 1800 NBR 80 Shore A -30 ÷ 120
Energizing ring
NBR + fabric
FKM+ fabric
Seal ring
• Hydraulic cylinders
NBR 70 Shore A -30 ÷ 120 • Presses
TEOL/1 20 ÷ 600 Thrust ring
FKM 70 Shore A
200 0,5
-10 ÷ 200 • Mobile hydraulics
• Machine tools
Back-up ring
PA6 Nylon
PTFE
../B
NBR + fabric
• Hydraulic cylinders
Seal ring FKM+ fabric
• Presses
TEOL/2 5 ÷ 1700 200 0,5
• Mobile hydraulics
Energizing ring NBR 70 Shore A -30 ÷ 120
• Machine tools
FKM 70 Shore A -10 ÷ 200
The pressure and temperature values shown in this table depend on several factors and are not valid simultaneously.
For this reason the data stated in this table are only to be taken as indicative. Please contact our technical office for further information.
14Tenute pistone - Piston seals
Item Dimensional P S T
Profile Materials Applications
code range [mm] [bar] [m/s] [°C]
PTFE+bronze 400
EGR/A 10 ÷ 1800 Seal ring • steel mills plants
PTFE+carbon 400
• injection moulding presses
PTFE+graphite 250
• forging presses
PTFE+glass 250
• extruding presses
PTFE+glass MoS2 400 5
• hydraulic cylinders
• machine tools
• moving machines
NBR 70 ShoreA -30 ÷ 120
EGR/B 10 ÷ 1800 O-ring
FKM 70 ShoreA -10 ÷ 200
• valves for hydraulic and pneumatic circuits
EGR/ PTFE+bronze
100 ÷ 1200 Seal ring
A/P PTFE+glass MoS2
NBR 70 Shore A • Hydraulic cylinders for
O-ring -30 ÷ 120
FKM 70 Shore A 600 5 special applications
-10 ÷ 200
• heavy industry
High performance
Back-up
thermoplastic
EGR/B/P 100 ÷ 1200 ring
material
PTFE+glass MoS2 300
Seal ring
PTFE+carbon 400
EGR/AW 300 ÷ 1800
• Hydraulic cylinders for
5 special applications
• heavy industry
EGR/BW 300 ÷ 1800 Energizing -30 ÷ 120
NBR 80 Shore A
ring
• Hydraulic cylinders
Seal ring NBR + fabric
• injection moulding presses
(back)
TEOL/2 200 ÷ 300 250 0,5 • forging presses
• extruding presses
Energizing NBR -30 ÷ 120
• hydraulic cylinders
ring
• Hydraulic cylinders
U-ring NBR+fabric • injection moulding presses
JWT 20 ÷ 600 340 -30 ÷ 120 • forging presses
Head ring NBR • extruding presses
• Hydraulic valves
The pressure and temperature values shown in this table depend on several factors and are not valid simultaneously.
For this reason the data stated in this table are only to be taken as indicative. Please contact our technical office for further information.
15Profili di tenuta per il settore idroelettrico - Sealing profiles for hydro power plants
Dim. range P S T
Item code Profiles Materials Applications
[mm] [bar] [m/s] [°C]
NBR + FABRIC Max 120
FKM + FABRIC Max 220
JWG 200 ÷ 2500
HNBR + FABRIC
300 0.25
Max 150
VMQ + FABRIC Max 180
NBR Max 120
XEH 200 ÷ 2500 FKM 150 0.1 Max 220
HNBR Max 150
NBR + FABRIC Max 120
D SEAL DE 200 ÷ 2500
FKM + FABRIC
150 0.5
Max 220
NBR + FABRIC Max 120
D SEAL DI 200 ÷ 2500 150 0.5 Valves for hydropower applications
FKM + FABRIC Max 220
NBR Max 120
D SEAL 200 ÷ 2500 FKM 100 0.5 Max 220
NEO Max 80
NBR Max 120
UNH 200 ÷ 2500 FKM 100 0.1 Max 220
HNBR Max 150
SEAL RING
PTFE + GLASS + MOS2
PTFE + CARBON 300
EGR/AM 300 ÷ 1800
400
5
ENERGISING RING
NBR 80SH Max 120
VULCANISED HEAD RING
NBR 70 SHORE A Max 120
FKM 70 SHORE A Max 220
• Hydraulic cylinders
TEOL 1/R 20 ÷ 600 SUPPORTING RING 300 0.5 • Presses
NBR + FABRIC • Machine tools
FKM + FABRIC
The pressure and temperature values shown in this table depend on several factors and are not valid simultaneously.
For this reason the data stated in this table are only to be taken as indicative. Please contact our technical office for further information.
16Profili di tenuta per paratoie - Sealing profiles for sluice gates
Other profiles
PRNM PRNMP PROM PROMP PRDB PRDBP
APRNM APRNMP APROM APROMP APRDB APRDBP
17Materiali - Materials
Rubber
Materiali - Material Proprietà - Properties Applicazione - Applications
NBR - OLEOLITE® - Optimal mechanical resistance
- Resistant to temp. -30 +120°C
- Resistance to wear
Elastomer butadyene acrylo-nitrile - Bad performance with heat
- Hydraulic oils, grease, emulsions, water
Also available in autolub version - Mineral base fluids: HH,HL, HM,HV
- Low resistance to fuels
(compound containing a 3% ptfe part) - Fire-resistant fluids HFA,HFB,HFC
- Low resistance to ageing
FKM - Resistant to temp. -20 + 220 C°
- Optimal resistance to high and low temperatures
Fluorinate elastomer - Good chemical resistance
- Hydraulic oils, grease, emulsions, water
Also available in autolub version - Mineral base fluids: HH,HL, HM,HV
- Bad performance with steam
(compound containing a 3% ptfe part) - Fire-resistant fluids HFA,HFB,HFC, HFD
- Good mechanical resistance
HNBR - Good resistance to low and high temperatures - Resistant to temp. -30 +150°C
Hydrogenated nitrile butadiene rubber - Good sealing performance with gas - Mineral oils
Also available in autolub version - Optimal performance with synthetic hydraulic oils - Fire-resistant fluids HFA,HFB,HFC
(compound containing a 3% ptfe part) - Suitable for aliphatic hydrocarbons - Water and detergents
- Not recommended for aromatic hydrocarbons
- good resistance to low and high temperatures
- Resistant to temp. -50+180°C
VMQ - Suitable for applications with food and
-Bad performance with mineral oils.
pharmaceutical products
Silicone rubber -For other applications it is recommended to contact
- Optimal dielectric properties
our technical staff.
- limited mechanical properties
PTFE
Materiali - Material Proprietà - Properties Compatibilità - Compatibility
- Low friction coefficient
- Optimal resistance to chemical agents and solvents
- Resistance to temp. -30 +120°C
Virgin PTFE - Optimal dielectric properties
- Hydraulic oil, emulsions, water.
- Optimal resistance to temperature
polytetrafluoroethylene - Mineral base fluids: HH,HL, HM,HV
- FDA approval
- Fire-resistant fluids HFA,HFB,HFC, HFD.
- Low wear resistance
- Low recovery
Special PTFE Materials
- Optimal resistance to wear and optimal anti - Hydraulic oil, grease, emulsions, water.
PTFE filled with glass - Extrusion properties - Mineral base fluids: HH,HL, HM,HV
- FDA approval - Fire-resistant fluids HFA,HFB,HFC, HFD.
- Hydraulic oil, grease, emulsions, water.
- Optimal resistance to wear and distorsion
PTFE filled with carbon - Bad dielectric properties
- Mineral base fluids: HH,HL, HM,HV
- Fire-resistant fluids HFA,HFB,HFC, HFD.
- Low friction coefficient - Hydraulic oil, grease, emulsions, water.
PTFE filled with graphite - Optimal heat dispersion properties - Mineral base fluids: HH,HL, HM,HV
- Good performances in applications with steam - Fire-resistant fluids HFA,HFB,HFC, HFD.
- Optimal resistance to wear and distorsion
- Hydraulic oil, grease, emulsions, water.
- Good thermal conductivity
PTFE filled with bronze - Bad dielectric properties
- Mineral base fluids: HH,HL, HM,HV
- Fire-resistant fluids HFA,HFB,HFC, HFD.
- Good resistance to chemical agents
- Optimal resistance to wear and optimal - Hydraulic oil, grease, emulsions, water.
PTFE filled with bronze/MoS2 anti-extrusion properties - Mineral base fluids: HH,HL, HM,HV
- Resistance to high pressure - Fire-resistant fluids HFA,HFB,HFC, HFD.
Rubber fabric
Composizione - Base Composition Applicazione - Applications
Cotton fabric / NBR sh 75 Max temperature 120 ° C
TENAX Colour black For hydraulic oils, water emulsions and HFA, HFB, HFC fluids
Cotton fabric / NBR sh 75
Max temperature 120 ° C
TENAX PTFE colour: white
For hydraulic oils, water emulsions and fluids
Elastomer base compound containing PTFE
Cotton fabric / NBR sh 90
Colour: red – brown ord blue Max temperature 120 ° C
TENAX/ H.D. - FDA approval available on demand For hydraulic oils, water emulsions and HFA, HFB, HFC fluids
- Special version for heavy duty applications
Max temperature 180 ° C
Cotton fabric / FKM sh 75
TENAX FKM Colour black
Hot oils – low pressure steam – acids – alkali – solvents –
phosphoric esthers - HFA,HFB, HFC,HFD fluids
Cotton fabric / FKM sh 75 + aramidic fibre Max temperature 200 ° C
TENAX FKM/kev Colour black For special applications
Cotton fabric / NBR sh 75 + aramidic fibre Max temperature 120 ° C
TENAX/NBR/kev Colour black For special applications
Cotton fabric / HNBR sh 75 Max temperature 150 °C
TENAX/HBR Colour black For hydraulic oils, water emulsions and HFA, HFB, HFC fluids
Cotton fabric / VMQ sh 75 Max temperature 180 °C
TENAX/VMQ Colour red For special applications
The pressure and temperature values shown in this table depend on several factors and are not valid simultaneously.
For this reason the data stated in this table are only to be taken as indicative. Please contact our technical office for further information.
18Rivestimento speciale - Special coating
Trattamento protettivo FRILON® sul labbro di tenuta
Il trattamento protettivo Frilon® si effettua sulla superficie di tenuta. Il trattamento prevede la termosaldatura di uno strato di polimero
a base di PTFE sulla superficie in gomma.
Vantaggi :
• Riduzione significativa del coefficiente di attrito
• Straordinario potere di antiaderenza con effetto no-stick
• Ottima scorrevolezza sulla superficie di tenuta
• Maggiore durata nel tempo della guarnizione
• Maggiore resistenza agli agenti chimici
• Maggiore resistenza agli agenti atmosferici
Di norma i prodotti in gomma hanno un coefficiente di attrito dinamico di 0.5 µ, con il trattamento Frilon si ottiene una riduzione fino a 0.07 µ.
Il trattamento Frilon® può essere realizzato su tutti i materiali (NBR – FKM – HNBR) compresi i materiali con caratteristiche FDA.
G35 with Frilon coating V-ring with Frilon coating D-seal with Frilon coating JWG with Frilon coating
Protective FRILON® coating on the sealing lip
The protective Frilon® coating is made on the sealing surface ; with this treatment a PTFE base polimer layer is thermo-welded on the rubber surface.
Advantages :
• Significantly reduced friction coefficient
• an extraordinary no-stick effect
• optimal smooth running effect on the sealing surface
• longer seal life
• better resistance to chemical agents
• better resistance to atmospheric agents
Rubber items normally have a dynamic friction coefficient of 0.5 µ; with the Frilon® treatment this coefficient is reduced till 0.07 µ.
This treatment can be made on all materials (NBR – FKM – HNBR) including the ones with FDA approval.
19Gaskets & seals solutions Gaskets & seals solutions
ANELLI DI TENUTA DIN 3760 Piping service
CAF compressed asbestos fibers, Graphite
OIL SEALS DIN 3760 Rubber, Metal seals and Braid Packings
Gaskets & seals solutions Gaskets & seals solutions
Marine engines and power stations Heavy industry
Hydraulic cylinders and rotary movements
20Gaskets & seals solutions Gaskets & seals solutions
Oil & Gas Industry Sealing sets
Spare parts for valves
Gaskets & seals solutions Gaskets & seals solutions
TENAX® High pressure pumps
Vee-Packings - Chevron sets Water jet, plunger and triplex pumps
21Head office: Manifattura guarnizioni colombo & c. s.p.a. 24067 Sarnico (BG) via Vittorio Veneto, 48 Tel. +39035910052 Fax +39035910957 P.iva: 02385600164 E-mail: info@colombospa.com Web site: www.colombospa.com Factory in Paratico: 25030 Paratico (BS) Via Vanzago, 30 Factory in Novate Milanese: 20026 Novate Milanese (MI) Via Curiel, 12
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