Description
The 151122T O-ring is used to seal select water filter housings. It has an inside diameter of approximately 5-3/8″, outside diameter of approximately 5-3/4 inches, and thickness of 0.210″. It is made of nitrile butadiene rubber (Buna-N) for flexibility and resistance to abrasion and tearing.
Important Note: This part number is different from the Pentek, Pentair 151122 (as denoted by the T at the end of the part number). This o-ring is not compatible with units that call for the 151122 o-ring.

![Pentek, Pentair 151122T (Thick Size) O-Rings [3 or 6 Pack]](https://www.diyhardwareshop.com/wp-content/uploads/2026/07/pentek-pentair-151122t-thick-size-o-rings-3-or-6-pack.webp)


