H.E.R.S. Inc. offers a variety of o'rings and seals. We have several o'rings, poly seals, wipers, and much more in stock.
Listed below you will find a general purpose guide to help you determine what type of material may be required for your application. H.E.R.S. Inc. does not sell o'rings or seals that will be used in brake applications.
|
Elastomer
(Temp. Range) |
Recommended
For |
|
Part Number |
Description |
Notes |
|
Buna N
Nitrile NBR
(-65 °to 275°) |
General Purpose
Petroleum oil,
fluids, cold water
& plumbing |
Phosphate Ester
Skydrol Fluids
Auto Brake Fluid
Ozone Synthetics |
4000-70
4900-70 |
None |
Most Popular |
|
Fluorocarbon
Viton
Fluorel (FKM)
(-15 ° to 450°) |
High Temperature
Chemical Resistant
Compression Set Resistance
Petroleum Oils |
Phosphate Ester
(Skydrol Fluids) |
9000-75
9009-90
9005-75 |
Black
90 Duro Black
Brown |
2nd Popular |
|
Silicone
(SI)
(-65° to 450°) |
Dry Heat
High Analine
Points Oils
Chlorinated
Di-phenyls
Static Application |
Most Petrolem
Fluids, Ketones,
Mek, Acetone,
Water, Steam Dynamic Applications |
1235-60
1200-70
1201-70 |
FDA
Generic Non FDA |
Poor tear resistance and abrasion.
Poor Strength.
Poor in Dynamic Service. |
|
Ethylene
Propylene
EPM EPDM
(-65° to 300°) |
Most Phosphate
Ester (Skydroll)
Steam (+400°)
Water |
Some Phosphate
Ester (Hydraul)
Petroleum Oils
Di-Ester Base |
5601-70
5600-70 |
Generic |
|
|
Neoprene
Chloroprene
(CR)
(-65° to 300°) |
Refrigerants
Freon, Ammonia
Food Service
Mild Acid Resistant |
Phosphate Ester |
3110-70
3100-70 |
None |
Pre-dates Buna for General Service |
|
Urethane or
Polyurethane
(-40° to 300°)
(temp. varies) |
High Pressure
Abrasion
Resistance
Oil Resistance
Ozone
Tear Resistance |
Water and Steam |
1015-70
1016-90 |
None |
Cut resistance High Tensile and Elongation |