Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack)

These o-rings fit the Pentair Big Blue filter much better than other brands I have bought. Other brands had a diameter slightly too big for the o-ring channel in the filter sump, making it difficult to seat them in the channel, which required multiple attempts to reattach the sump to the top of the filter to get the assembly leaktight. These o-rings were just right. They seated totally within and against the outside wall of the filter sump o-ring channel, so when the sump was reattached to the top the filter it was leaktight on the first try.

No issues.

We have purchased this before and it’s an exact fit

well made - good price - does what it says. they're filter gaskets, what's not to like?

O-ring worked really well in my water filter system. Size was exactly like the Pentair ring I removed. Easy to install & sealed well. Price was good. Not much else I can state concerning the ring.

Easy to install. A perfect fit. Just what I needed!!

Worked fine on my Pentair Big Blue filter housing. No leaks Used silicone grease before installing.

Good product As advertised

Good fitment. Seems to be good quality rubber. No leaks!

Muy buen producto, hecho con buenos materiales y también buenos terminados

Excellent fit. Cured water leakage problem.

these O rings are the same quality as the original. They are the perfect size and thickness.

Finally I can replace my old one and it fits very well.