Product Overview O-Ring Imperial 4 x 3/16 NBR Includes: 1 x O-Ring Imperial 4 x 3/16 NBR Specifications: Inside Diameter: 4 inchOutside Diameter: 4-3/8 inchCross Section : 3/16 inchMaterial:Nitrile Buna Rubber Durometer:70 Reviews (No reviews yet) Write a Review