Pentair Sand Drain Gasket

The Pentair Sand Drain Gasket (part number 154715 or 154715Z) is a precision-molded sealing ring designed specifically for top-mount pool and spa sand filtration systems, including the Pentair Sand Dollar, Meteor, and Cristal-Flo II lines. Engineered to sit perfectly inside the 1.5-inch nominal drain assembly at the lower base of the filter tank, this gasket serves as the primary barrier behind the filter's drain cap. Its critical structural function is to create an absolute airtight and watertight compression seal, which effectively prevents slow leaks and containment losses while the system is operating under continuous hydraulic pressure. Fabricated from a high-durability, chemical-resistant rubber compound, it is built to survive harsh pool sanitizers, seasonal shifts, and winterization drainage procedures without warping or degrading. Because it is a highly compact and specialized rubber washer, this individual part is exceptionally lightweight, carrying a net product and shipping weight of just 0.02 pounds (roughly one-third of an ounce).