Replacement On/Off Pin Valve O-ring, Tank On/Off Valve for the following product.
O-ring dimension: OD = 8.5mm ; Thick 1.55mm
Air Tank on/off Valve Adapter, SKU: 001280 (Post 2010 version)
Shogun Remote Line, SKU: 000942
Shogun Remote Line with Pressure Release Valve, SKU: 001917
Shogun Remote Line with Pressure Release Valve (Pro), SKU: 002671
CO2 Tanks / Cylinder Refill Station Kit, SKU: 000273
For older version o-ring here.