This is for a 2 pack of replacement o-rings for the Raypak 005891F Unitherm Governor.

O-rings

Our orings are FDA/NSF61 approved
Considered the standard for most general applications.
Excellent resistance to petroleum based lubricants, hydraulic oils, gasoline, fuels and L.P. gases.
Temperature range -58 F to 248°F 
Color Black
70 Duro