O-ring set for Classic/Standard

O-ring set for Classi/Standard (6 parts)

A set of six (6) O-rings for use with Classic/Standard only. It contains:

One (1) cylinder O-ring

Two (2) piston o-rings (compatible with PGK, NOT compatible with SS pistons)

One (1) shaft O-ring (compatible with PGK)

Two (2) pressure gauge O-rings (compatible with PGK)