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O-Ring, Black BUNA/NBR Nitrile Size: 380, Durometer: 90 Nominal Dimensions: Inner Diameter: 11 19/40(11.475) Inches (29.1465Cm), Outer Diameter: 11 17/19(11.895) Inches (30.2133Cm), Cross Section: 17/81(0.21) Inches (5.33mm) Part Number: OR90BLKBUN38
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