O-Ring O-643 Buna-N 9/16" ID 1/8" Cross Section

O-Ring O-643 Buna-N 9/16" ID 1/8" Cross Section O-643.

Replaces part 207-7470-10 , 627003 , 805-0207 , 806105249364 , 90-423-1643 , O-207B70 , O-643 , WW8050207B , WWP-051-0207 .

Used in DE filter assemblies, cartridge filter assemblies by Waterway including Clearwater II and Pentair top access diverter valves.

We now use the AS568A O-Ring standard used by the O-Ring industry in order to bring a standardized approach to the pool and spa industry.

The current active part number for an o-ring is 90-423-7xxx, where xxx represents the AS568A designation.

This designation ranges from -001 thru -932, in order of smallest to largest first by cross section then by diameter.

We also offer an o-ring pick 134.