Standard paintball fill nipple o-ring (size 006). Molded from 90 durometer polyurethane for the ultimate durability and dependability. Includes ten (10) o-rings If your HPA tank is leaking from the fill nipple after filling, it means your o-ring is worn out or damaged and requires replacement. Quickly get your air tank back in working order with Captain O-Ring's replacement fill nipple o-rings. Fits fill nipples (foster fitting valves) that use the standard size 006 o-ring in paintball, airsoft, and more. Some PCP Airguns use this size fill nipple o-ring, make sure to confirm the o-ring size of yours ordering. Manufactured and warrantied by Captain O-Ring LLC. If you have a leaking fill nipple (also called foster fitting) on your high pressure paintball air tank, the most likely culprit is a worn out or damaged fill nipple o-ring. Captain O-Ring's ten (10) pack of polyurethane fill nipple o-rings ensures you aren't left at the field with a leaking fill nipple, while also having spares on hand for future repairs and friends/teammates.

To check compatibility:
Empty your air tank entirely, remove the fill nipple from the tank/regulator, remove the piston (you may have to poke it out from the fill side opening with something narrow such as a toothpick or paper clip) and check if the o-ring is a size 006 (approximately 2.9mm inside diameter x 1.8mm thickness x 6.5mm outside diameter / 0.114" inside diameter x 0.07" thickness x 0.254" outside diameter). Make sure to check compatibility before ordering to make sure your tank's fill nipple uses this standard fill nipple o-ring.

To Install:
Empty your air tank entirely. Remove the fill nipple from the tank/regulator. Remove the piston from the fill nipple (you may have to poke it out from the fill side opening with something narrow, be sure to note which direction it faces). Remove the old o-ring. Install the new o-ring. Replace the fill nipple piston (make sure it faces the same direction as it was removed). Install the fill nipple onto the tank/regulator. Fill the tank and ensure no leaks. Note: Do not lubricate the o-ring with oil during installation. Under high pressure, oil may reach its flash point and ignite/combust.

What to expect:
Includes ten (10) standard paintball polyurethane fill nipple o-rings in Captain O-Ring branded packaging.

Manufactured and warrantied by Captain O-Ring. Captain O-Ring is a registered trademark of Captain O-Ring LLC.