lip element is nitrile 90 durometer; outer heel is hard, dense, rugged aramid fier oil resistant-rubber composition 100+ durometer; seal over-all width is 0.750
6.000" inside diameter 6.750" outside diameter concentric ring style style st urethane wiper ring with slotted heel temp range -65 to 220 degrees f, 90 durometer, slotted heel