Black BUNA-N Rubber 21 I.D. X 21-3/8 O.D. X 0.21 C.S. Inch O-ring
MFG Item #:568-390-B
Product Info
568-390-B
Hercules
568-390-B Is a Black BUNA-N Rubber O-ring. Measuring 21 I.D.X 21-3/8 O.D. X 0.21 C.S. Inch with a temperature range of -40°F – 240°F. Available in quantities of 20.