O-Ring is the Chicago Pneumatic service part carried under part number 4700W65121. Seals like this one are consumables in a tool they are cheap, they age with heat and hours, and replacing the whole set during a teardown saves a second strip-down later.

Matching it to a machine? Send us the model and serial and we will confirm the fit, or work back from the parts diagram hub. Complete tools are on the CP tool catalog. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.

• Part number: 4700W65121
• Manufacturer: Chicago Pneumatic
• Crowder SKU: CP-4700W65121