Sterling Seal and Supply (STCC) OREPD278 O-Ring, Number-278 Standard is Good for Steam (400 Degree F), Hot Water, Sunlight, Silicone Oils and Greases, EPDM/EPR/EP, 12" ID, 12-1/4" OD: Amazon.com: Industrial & Scientific
E1054-3X13.5 Metric O-rings
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