90518200 LONG LIFE RING

SKU: 1795

Long-life rings are wear-resistant rings in the triplex pump seal stack, designed to extend service intervals by giving the packing set a harder, more durable running surface or spacer than a standard ring. Part 90518200 fits within the cylinder seal assembly where seals and support rings stack together, and like every part in that stack it is sensitive to correct order and orientation during reassembly. If you are resealing a pump and find this ring grooved, cracked, or heat-discolored, replace it — a damaged ring will chew through new packings quickly. Fitment is part-number-specific: confirm 90518200 against your pump's exploded diagram or data plate rather than matching by appearance.