The Hayward SPX1495Z1 Union O-Ring is a crucial sealing component intended for use in pool and spa filtration systems, as well as other HVAC applications that require a secure, leakless connection. This O-Ring is made of sturdy rubber and measures 2.5" in size with an outer diameter of 2.88", ensuring a tight fit in suitable unions. The SPX1495Z1's principal role is to produce a water... https://www.usapoolshop.com/spx1495z1-hayward-union-o-ring