GE GXWH35F GXWH40L General Electric HHRING Replacement O-Ring, Black Replacement O-ring for standard whole home and drinking water filtration systems Includes one ring and tube of food-grade silicone compatible with gxwh30c, gxwh35f, gnsh38s, and gxwh40l Includes one O-ring and tube of food-grade silicone lubricant Seals filtration joint against high water pressure