Parker Ethylene Propylene (EP, EPM, EPDM) O-Rings Material Description:
EPR copolymer ethylene propylene and ethylenepropylene-diene rubber (EPDM) terpolymer are particularly useful when sealing phosphate-ester hydraulic fluids and in brake systems that use fluids having a glycol base.
Parker O-Ring Distributor
For over 50 years, Engineered Seal Products has partnered with Parker Seals. ESP is proud to be one of the FEW Premier Distributors to qualify as a "Parker Seal Technology Center (STC)".
What does Parker STC mean?
- Proven Engineering Capability
- Expert Material & Technical Support
- ISO Quality Approval
- Strong Financial Track Record
- Hot water and steam up to 149°C (300°F) with special compounds up to 260°C (500°F).
- Glycol based brake fluids and silicone-based brake fluids up to 149°C (300°F).
- Many organic and inorganic acids.
- Cleaning agents, sodium 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.
Cannot be used in:
- Mineral oil products (oils, greases and fuels).
Parker Ethylene Propylene (EP, EPM, EPDM) O-Rings Compound Numbering System:
Parker has two type of nomenclature used to reference Ethylene Propylene (EP, EPM, EPDM) products.
| E |
| Polymer Code (Single Letter) |
| 1100 |
| Sequence Number (Four Digits) |
| -50 |
| Durometer Indicator (Two Digits) |
- OR -
| E |
| Polymer Code (Single Letter) |
| J |
| Special Property Description (Single Letter) |
| 273 |
| Sequence Number (Three Letters) |
| -70 |
| Durometer Indicator (Two Digits) |
Special Property Descriptions:
E
Ethylene Acrylate or (Vamac®)
F
Fuel Resistant or Fully Fluorinated
G
Higher Fluorine Content
P
Low Temperature Flexible
| Hardness (Shore A) Range |
| 40 - 95 |
Temperature ranges will apply to the majority of media for which the material is potentially recommended. With some media however, the service temperature range may be significantly different. ALWAYS TEST UNDER ACUTAL SERVICE CONDITIONS.
ESP’s shelf life recommendation is based on the ARP 5316 standard and intended to be utilized by those organizations who do not already have specific recommendations for the control of elastomeric seals. It should be noted that the packaging of the elastomeric seals prior to assembly into a product is an integral part of the controlled storage procedure. It provides a positive means of product identity from the time of manufacture, to the time of assembly.