O-Ring, 0.50 In. x 0.63 In. x 0.06 In., For Use With Grainger Item Number 36ND91, 36ND92, 36ND93, 36ND94, 36ND95, 36ND96, 36ND97, 36ND98, 36ND99, 36NE01, 36NE02, 36NE03, 36NE04, 36NE05, 36NE06, 36NE07, 36NE08, 36NE09, 36NE10, 36NE11, 36NE12, 36NE13, 36NE14