ORING EPR/EPDM INCH

DESCRIPTION

O-rings are the most common and cost-effective sealing elements available. They seal over a wide range of pressure, temperature and tolerance. They are an excellent option where space limitations are a concern. And with proper hardware design, o-rings can seal a wide range of pressures from low vacuum up to several thousand PSI. O-rings are available in a wide range of elastomers as well as PTFE. 

Ethylene Propylene Rubber (EPR, EPDM): EPR copolymer ethylene propylene and ethylene-propylene-diene rubber (EPDM) terpolymer are particularly useful when sealing phosphate-ester hydraulic fluids and in brake systems that use fluids having a glycol base. 

EPR/EPDM o-rings are readily available in 70 and 90 durometer. Other durometers are available on request. 

SEAL INFORMATION

Chemical Resistance:

•  HOT WATER AND STEAM UP TO 300F WITH SPECIAL COMPOUNDS UP TO 500F
•  GLYCOL BASED BRAKE FLUIDS (DOT 3 & 4) AND SILICONE-BASED BRAKE FLUIDS (DOT 5) UP TO 300F.
•  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.

Not compatible with:

•  MINERAL OIL PRODUCTS (OILS, GREASES AND FUELS)

Durometer (Shore A): 70 

Temperature Range (F): -70 TO 302 

Max Pressure (psi): 1,450 DEPENDING ON APPLICATION 

Max Pressure (psi) WITH BACKUP RINGS: 5,000 DEPENDING ON APPLICATION 

Max Speed (ft/sec): 1.5 

Mating Surface Roughness - Ra (µin) - DYNAMIC: 16 MAX 

Mating Surface Roughness - Ra (µin) - STATIC: 32 MAX 

Part Number Definition (Inch): (AS568 3-DIGIT NUMBER)EPR70 

Additional Part Number Definition (Inch): 4"ID X .210"CS = 345EPR70