Review on 🔴 Pentek 151122 OR-100 Buna-N O-ring: Perfect Replacement for Big Black Housings by James Nedumaran

Bought a Pentek Big Blue Housing Replacement Pan (P/N 153070) and bought this o-ring as a kit (often purchased together). The diameter of this o-ring is slightly oversized for the case by about 1/4 inch. I called Pentair Customer Service and they reassured me that this item (part number 151122) is the correct o-ring for the housing. I tried putting the o-ring in the freezer to allow the spell to shrink it to fit, but the size difference was just too big. Either these rings are out of specification or the diameter of the ring fit at the top of the case has changed. The Pentek service rep says the housing hasn't been modified - so for now I've concluded that the o-ring is the wrong size. I'll try another o-ring supplier and see if I get a proper fit.