Generic O-Ring [21" ID] [1/2" CS] O-485 (O-485) coverlifts OEM Pentair fuse holder

OEM Pentair fuse holder

The EC65 and EC75 compatibility gives this gasket practical value because internal sealing parts work best when the replacement matches the intended equipment family and gasket profile

Three-wire IID configuration

Raypak heater top

this Waterway air relief assembly is a practical replacement when the relief component and tube need to be renewed together

Generic O-Ring [21" ID] [1/2" CS] O-485 (O-485) coverlifts OEM Pentair fuse holderAn O ring helps create a dependable seal at a compatible extra large circular connection, and this generic version is sized with a 21 inch inside diameter and 1 2 inch cross section using the O 485 reference. When a very large heavy profile O ring becomes brittle, worn, or compressed, the assembly can lose the sealing support it should maintain across the full circumference. The 1 2 inch cross section gives this O ring practical value because very