AS568-112 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring [B70112] : The O-Ring Store LLC, We make getting O-Rings easy!
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N0674 2-208 - Nitrile 70 Durometer O-Ring, General Purpose (N0674-70) | Parker NA
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O-Ring Assortment, Buna N - Nitrile 70 Durometer O-Ring Kit, Quantity 382 each O Rings in kit, 30 most commonly used standard dash sizes - Walmart.com