' O-Ring, Viton, AS568 Dash Number 154, Actual Width 0.103 In., Actual Inside Dia. 3.737 In., Outside Dia. 3.943 In., Cross Section Shape Round, Durometer Rating Medium Hard, Durometer 75 Shore A, Nominal Width 3/32 In., Nominal Inside Dia. 3-3/4 In., Nominal Outside Dia. 3-15/16 In., Color Black, Temp. Range -15 Degrees to 400 Degrees F, Meets/Exceeds SAE J200, ASTM D2000, Package Quantity 2 '