20 PCS / Lot Rubber Black NBR 70A CS 0.5mm OD 1.6/1.8/2.5/2.8/3/3.5/4/4.5/5/6/7mm O Ring Gasket Oil Resistant Waterproof.-.

20 PCS / Lot Rubber Black NBR 70A CS 0.5mm OD 1.6/1.8/2.5/2.8/3/3.5/4/4.5/5/6/7mm O Ring Gasket Oil Resistant Waterproof.-.

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