Comet O-Ring For APS Series Pumps | Ø3, 53 X 117, 1
This item is highlighted as # 60 on the product illustration on the right side.
This o-ring from Comet Pumps is part # 1210 0369 and is a replacement item that goes with the APS Series pumps, APS 141 - APS 166.
It measures Ø3, 53 X 117, 1.