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 |
Not |
Part Number
|
Description
|
Notes
|
|
Buna N Nitrile NBR (-65 °to 275°) |
General Purpose Petroleum oil, |
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 (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
|
How to Measure a O'ring.
O'rings are measured by cross section, width and inside diameter. Dimensions are given in inches or millimeters.
After you have determined what type of material and dimensions give us a call for cost and availability.
H.E.R.S. Inc.also has poly-paks, back-up rings, quad rings, piston rings and many other seals in stock.
Have any questions?.Contact Us.