O-Ring FEP with Viton Core AS568 Dash Number 221 Actual Width 0.139 In. Actual Inside Dia 1.421 In. Outside Dia 1.699 In. Cross Section Shape Round Durometer Rating Hard Durometer 90 Shore A Nominal Width 1/8 In. Nominal Inside Dia 1-7/16 In. Nominal Outside Dia 1-11/16 In. Color Clear with Black Core Temp Range -75 Degrees to 400 Degrees F Meets/Exceeds ASTM D2116