345 Buna O-Ring, 70A Durometer, Black, 4" ID, 4-3/8" OD, 3/16" Width (Pack of 1000) o-ring Includes 2 kits + 2

Includes 2 kits + 2 lubes  compatible with Jacuzzi CFR & EF Cartridge Filter Kit

Part# 248128 2

Max-E-Glas Pentair/Pac Fab: Challenger

Also available in red silicone with higher heat resist with or without lube

Also available in single pack

345 Buna O-Ring, 70A Durometer, Black, 4" ID, 4-3/8" OD, 3/16" Width (Pack of 1000) o-ring Includes 2 kits + 2This O ring is made of black Buna nitrile, is round in cross section, has a durometer of 70A, and is designed for use in a wide variety of sealing applications. Buna nitrile can have high tensile strength, and abrasion, tear, and compression set resistance. It can be used in temperatures between 30 degrees F ( 34 degrees C) to 250 degrees F (121 degrees C), and is compatible for use with petroleum, HFA, HFB and HFC fluids, vegetable oil, alcohol,