Complete O-ring Kit plus a Senco Washer Firing Valve Seal pn LB5002.
Available on eBay Senco PW O-ring Kit + LB5002
Senco PW O-ring and Washer Valve Seal LB5002
O-ring kit for the senco PW + PW-2
+ Washer Firing Valve Seal LB5002
All O-rings in the tool.
Schematic break down and O-ring reference sheet with every order.