Product Overview O-Ring Metric 21.5mm x 3mm NBR 25 PackIncludes: 25 pieces O-Ring Metric 21.5mm x 3mm NBR Specifications: Inside Diameter: 21.5 mmOutside Diameter: 27.5 mmCross Section : 3 mmMaterial:Nitrile Buna Rubber Durometer:70 Reviews (No reviews yet) Write a Review