Save with Auto-Ship

Get the product you need, exactly when you need it, delivered right to your door. No more searching for the right part number, we've got you covered. Plus, you'll save $$ on every order and shipping is on us. Learn more

Save Money

Free Shipping*

Choose Frequency

*Free Shipping available in the contiguous US

Service Updates

Our call centers will be closed Monday, May 29th for Memorial Day. We will be available again starting Tuesday, May 30th from 8am - 5pm CST.

OR-38 Tier1 Undersink and RV Filter O-Ring

Price $10.99 List Price Price $15.99 Save 31%
Availability: In Stock
  • Ships fast!
  • Quick and easy installation
  • Designed with high-quality material
› See more product details
  • Ships fast!
  • Quick and easy installation
  • Designed with high-quality material
The OR-38 Tier1 Undersink and RV Filter O-Ring is a lubricated rubber gasket for many brands of undersink and whole house water filtration housings. The OR-38 o-ring can be used with 3/8-inch inlet/outlet housings with a 3.5-inch diameter housing sump. The OR-38 O-Ring has been branded under Ace Hardware, American Plumber, Ametek, Culligan, Pentek, and USFilter Plymouth Products. The OR-38 o-ring should be replaced every two filter changes or if there is damage to the o-ring. Comes with a quick and easy installation saving you time and money. The Pentek OR-38 o-ring gasket should be well lubricated with silicone lubricant to prevent leaks in the water filtration system. Order today!

Experience the Tier1 Difference

Tier1 manufactures high-quality filtration and household products. We take creating and maintaining a healthy home seriously. Products must undergo rigorous testing and meet demanding quality expectations in order to earn the Tier1 badge. Every purchase is backed by the Tier1® Guarantee:

  • Guaranteed Fit
  • Guaranteed Quality
  • Guaranteed Price
More Information
Package Qty 1
Warranty Guarantee Unconditional Product Guarantee for Life of the Product