Hayward® O-Ring Materials
The O-rings for Hayward® are available in the two materials shown below; their descriptions are copied from Hayward's Engineering Product Guide. If you are unsure which material is most compatible with your application, please send us an inquiry and we will assist you with selection.
EPDM (Ethylene Propylene Diene
Monomer)
EPDM rubber is an elastomer prepared from ethylene and propylene
compounds. It has been used continuously to a temperature of 300°F.
The material is recommended for water, steam, dilute acids, dilute
alkalis and alcohols. EPDM is not recommended for petroleum oils or
diester lubricants.
FPM or FKM (Fluorocarbon Rubber)
The fluorocarbon elastomers have a maximum service temperature of
400°F. Fluorocarbon materials are recommended for petroleum oils,
diester base lubricants, silicate fluids and greases, halogenated
hydrocarbons, acids and vacuum environments. Fluorocarbon materials
are not recommended for ketones, amines, anhydrous ammonia, hot
hydrofluoric or chlorosulfonic acids.