Compressor Seal

R-134a R-12
Seal Material Seal Material
H-NBR NBR
(Hydrogenated Nitryl Butadiene Rubber) (Nitryl Butadiene Rubber)

Reason for Change The NBR type seals used on the R-12 compressors will swell and deteriorate rapidly with R-134a refrigerant, causing refrigerant leaks.