The Everpure EV311240 O-Ring provides a reliable, airtight seal to eliminate water leaks and maintain proper pressure within your commercial filtration system. This specialized elastomeric gasket functions by sitting securely inside the groove of the filter housing head; when the housing is tightened, the rubber compresses to fill microscopic gaps between the mating surfaces, complete... https://partsfe.ca/ev311240-everpure-o-ring