This o-ring fits inside the standard 10” filter housing.
It is recommended that a water based lubricant is applied to the o’rings every time you change the cartridges. They should be changed every 2 – 3 years or when they start to flatten out or lose shape.
N.B. O-ring is sold individually not in pairs
Dimensions: inside diameter 85.73 mm x 3.53 mm thickness