Clear O-Rings for 10"x2.5" and 20"x.2.5" Stainless Steel Water Filter Housings, set of 3. Will fit both Countertop and Under Sink Crystal Quest systems. ACTUAL Diameter: 3.5 inches (90 mm x 3 mm).
The most common o rings ( also called oring , rubber gasket , o-rings, rubber seals ) used in water filtration are made from Buna N material. Buna N is also commonly referred to as nitrile. This is the ideal choice for cold water filtration because they are inexpensive and have superior performance characteristics.
Typical stainless steel housing outside dimentions for this o-ring can be around 12x6 (for systems that use 10"x2.5" filters). Measure actual o-ring diameter for better match.
ACTUAL Diameter: 3.5 inches (90 mm x 3 mm)