1 Inch On Off Valve Oring T-Gasket 25030-000-011 4505106

This t-gasket oring seals the valve cap to the valve body for select 1 inch on/off valves 25030 by CMP.

about 1 3/8" inner diameter and 1 3/4" outer diameter.

Gasket is flat on one side and raised (t-gasket) on the other.  Seals valve cap to valve body on 25030 series one one inch on/off or diverter valves by CMP.

This part used in these on/off valves and other models including waterfall on/off valve

25030-000-011 or cmp25030-000-011

Can also just use a plain o-ring which is easier to retrofit   805-0127SD