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O-Rings

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The O-RINGS in elastomer have a round shape,vulcanized in tools.

Working
The O-RINGS must prevent the fluid leakage between two metal surfaces so that they must have a radial
compression.This strength combined with the one of the fl uid to be sealed, increased by the pressure, can guarantee a perfect sealing.

Elastomer extruded cord
For static applications it is possible to obtain O-RINGS by using an extruded cord joined with an appropriate glue.
The most common sizes in NBR and FPM elastomers are available ex-stock.

Hot vulcanized O-RINGS
In case of a non standard size, for static applications,O-RINGS can be obtained by using an extruded cord
with an hot vulcanized vacuum operation.Available elastomers: NBR-FPM-MVQ-EPDM-FMQHNBR


 

 

 

Literature

 
Rubber rings (o-rings) search

You can search by the o-ring's dimensions, then you will be provided with all possible options.

O-ring's dimensions

Inner diameter (d) mm

O-ring's diameter (D) mm
Enter (o-ring's) dimensions, or part of its dimensions.
Manufacturers

 

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Types Hardness Main characteristics Temperatures C°
NBR
(butadiene-acrylonitrile elastomer)
70 Good resistance to mineral oils and greases without
additives, chlorinated and aromatics.Poor chemical resistance
to ageing,weathering and ozone.
-30°C + 100°C
FPM
(fluoroelastomer)
 
75 Excellent resistance to high temperatures, to oils and greases,
aromatic and chlorinated hydrocarbons.
-25°C + 200°C
EPDM
(ethylene propilene elastomer)
 
70 Very good resistance to hot water and steam, to ageing and
weathering.Poor resistance to mineral oils and greases.
-40°C + 160°C
MVQ
(silicone elastomer) 
70 Excellent resistance to hight and low temperatures.
Excellent flexibility and low friction.
Excellent resistance to ageing,weathering and ozone.
Poor tensile and tear strength.
-60°C + 200°C
FMQ
(fluorosilicone elastomer) 
70 Good resistance to fuels, mineral
greases, oils and synthetic oils.
-60°C + 180°C
FFKM CHEMRAZ®
(perfluoroelastomer) 
80 / 90 Excellent chemical resistance similar to PTFE, excellent
heat resistance.Conforms to FDA standard.
 
-30°C + 324°C
FEPM FLUORAZ®
(tetrafluoroethylenepropilene elastomer) 
78 / 90 Excellent resistance to superheated steam.
Conforms to FDA standard.
 
-5°C + 260°C

 

 

Literature