Viton O-Rings - Dash Sizes From:

These are VITON replacement o-rings for our 920, 921, 922 & 923 Series adaptors. 

They can also be used for any dash sized fitting that may need replacing using a Viton O-Ring.

Made from VITON material.

Great to keep as spares in your tool box, just in case you pinch an o-ring, or routinely replace your o-rings with maintenance.