Here is a reseal kit that is correct for the Crosman Mark I & Mark II CO2 pistols.
It include the most common O-Rings that are needed to bring your
pistol back to life. The kit includes:
(1) Tube Cap/Piercing Knob Seal (White Urethane O-Ring)
Please Note: This Urethane seal remains pliable to -40 degrees F and easily withstands the cold of CO2 gas for longer life.
(1) Valve Body Seal (O-Ring)
(1) Piercing Pin Seal (O-Ring)
(2) Breech Bolt Seals (O-Ring) (Smaller one is for Mark II (.177 CAL) and the larger one is for Mark I (.22 CAL)
(1) Exploded View With Part List For Mark I & Mark II - Clean COPY
(1) Seal Identification Guide (Identifies each seal, it's part number and where it is utilized)
Thank You.