Manufacturer Varies O-Ring,Buna N,Dash 154,3-3/4,3.943,PK10 GR-N70154/10

O-Ring, Not Metal Detectable Metal Detectable, Not X-Ray Detectable X-Ray Detectable, System of Measurement Inch, Cross Section Shape Round, O-Ring Material Buna N, Durometer (Hardness) Rating Medium Hard, Nominal Inside Dia. 3 3/4 in, Nominal Width 3/32 in, Actual Inside Dia. 3.737 in, Actual Width 0.103 in, Dash Number 154, Color Black, Durometer 70A, Meets/Exceeds ASTM D2000, NBR 70, Nominal Outside Dia. 3 15/16 in, Actual Outside Dia. 3.943 in, FDA Approved Not FDA Approved