Help Restore The Housing Seal: These rubber O rings compress between the sump and filter head. If the old ring is cracked, distorted or enlarged, a correctly sized new ring can help restore the seal.
Check Your Size Before Buying: Replacement 151122 O-Rings for Pentair/Pentek #10 and #20 Big Blue water filter housings. Check the chart; verify original part number, exact model, ID and thickness.
Thickness Makes The Difference: This whole house water filter O ring has a 0.165 in section. It does not replace OR-250 or other thicker rings, even when the inside diameter looks close.
Easy to Install: Shut off water and release pressure. Clean the groove, seat these O rings for water filter housing flat and untwisted, add compatible silicone grease if directed, then hand-tighten.
What You Get: 3 x same-size spare O-rings for routine service or multiple housings. Keep extras on hand for future service, so a worn seal is less likely to delay your next filter change.
Shipping takes place within 3-5 business days. If there is a problem with the shipment of the product, we will notify you via the email address you entered when ordering.
We do not currently offer free shipping. However, this may be added at some point. We apologize.
If your order has been shipped, we will add the tracking number to your order and notify you via the email address you entered when ordering.
For returns or exchanges, please contact us within 14 days of receiving the product, along with a receipt or screenshot of the purchase, and a photo of the product with the packaging or tag intact.
Trust and quality
Better Water Management. Modern Solutions.
Explore practical products designed to support cleaner, clearer, and better-managed water in everyday spaces.
