O-rings are used in straight thread valves to provide a gas-tight seal between the valve and the cylinder as the O-ring compresses into the O-ring gland. In the absence of this small and simple contraption, the gas in the cylinder will leak out. Replacement sealing O-rings available in Teflon or Nitrile. O-rings should be replaced every time a valve is reinstalled.

Sizes:

• 210 – for 0.750-16 UNF, available in Teflon and Nitrile
• 216 – for 1.125-12 UNF, available in Teflon and Nitrile
• Additional sizes are available upon request

* The cylinder valve must be removed in order to install this product. Must be installed by a qualified cylinder technician due to torque specifications. Compressed gas cylinders and valves are dangerous, please use caution.