Spring Energized Seals for hydraulic fluid sealing. Designed for extreme and demanding applications.
A chart listing the most popular compounds and their fluid compatibility / technical information.
Seal & Design Canada: Toronto, Ontario 
Headquarters: Clarence, NY Ethylene Propylene (EPDM)
EPDM is a copolymer of ethylene and propylene. Ethylenepropylene-diene rubber (EPDM) is produced using a third monomer and is particularly useful when sealing phosphate-ester hydraulic fluids and in brake systems that use fluids having a glycol base.
Both o-rings and gaskets can be made from EPDM materials.
Names: Ethylenepropylene-diene rubber, EPDM, EPR, EPM
Compound Info | |
| ASTM D1418 Designation | EPDM |
| ASTM D2000/SAE J200 Type, Class | AA, BA, CA, DA |
| Hardness (Shore A) | 40-95 |
| Color | black |
Thermal Properties | |
| Standard Min Temp. | -60°F (-50°C) |
| Max Temp. | 250°F (120°C) |
| Special Min Temp. | -67°F (-55°C) |
| Special Max Temp. | 302°F (150°C) |
Chemical Resistance
Hot water & steam up with special compounds up to 400°F (204°C)
Glycol based brake fluids up to 300°F (149°C) Many organic and inorganic acids
Cleaning agents, soda and potassium alkalis
Phosphate-ester based hydraulic fluids (HFD-R)
Silicone oil and grease
Many polar solvents (alcohols, ketones, esters)
Ozone, aging and weather resistant
NOT Compatible
Mineral oil products (oils, greases, and fuels)
Disclaimer: These are general guidelines only. All materials should be tested in your application.
Headquarters: Clarence, NY
Seal & Design Canada: Toronto, Ontario
