Check the listing for details. Smith & Wesson 78G 79G URETHANE Seal Kit + Exploded View + Parts List + Guide. Condition: New. Listed at 7.20 USD. Here is a seal kit that is correct for the Smith & Wesson models 78G & 79G CO2 pistols. It includes all of the most common O-Rings that are needed to bring your pistol back to life. The kit includes: (1) Piercing Body/Gas Cap Seal (White Urethane O-Ring) (1) Piercing Pin Seal (White Urethane O-Ring) (1) Valve Body Plug Seal (White Urethane O-Ring) (2) Valve Connector/Transfer Port Seals (White Urethane O-Rings) (2) Breech Bolt/Probe Seal (White Urethane O-Rings) (Slightly smaller one is for 79G - the larger one is for 78G) These white urethane seals are widely regarded to be of the highest quality and most durable available for your CO2 application. (1) O-Ring Identification Guide (Identifies each seal, it's part number and where it is utilized) (1) Exploded View/Parts Diagram & Parts List - Clean Printed Hard COPY Thank You.