17.955 in, Actual Width 0.21 in, Dash Number 387, Color Black, Durometer 70 Shore A, Meets/Exceeds ASTM D2000, EPDM 70, Nominal Outside Dia.
375,PK5 O-Ring, No Metal Detectable, No X-Ray Detectable, System of Measurement Inch, Cross Section Shape Round, O-Ring Material EPDM, Durometer (Hardness) Rating Medium Hard, Nominal Inside Dia. O-Ring,EPDM,Dash 387,18,18.375 in, FDA Approved No, Package Quantity 5 18 in, Nominal Width 3/16 in, Actual Inside Dia.