ORK EN549 Compliant Rubber O Ring Seals for Gas Valves and Appliances Product Details A: Rubber O-ring seals - for binoculars, tools, automobiles, garage, plumbers, machinery, plant, repair, air and gas connected. B: For professional pipe, sealing pipe and sewer repair leaks family, bathtub, septic tanks, hydraulic, air and gas connections, etc.. C: Oil, coolant, power steering fluid, washer fluid, Use for mechanical,grease applications. D: These rings are made of a very