O-Ring 38mmx30mmx4mm Metric Nitrile Rubber 10pcs

External diameter 38 mm, inner diameter 30 mm, cross section diameter 4 mm. 70A Durometer (Shore Hardness) for Penetration Resistance. Standard nitrile butadiene rubber with a wide temperature range from -4°F (-20°C) to 212°F (100°C). Application: Widely used for pressure washer, filter, pump, water hose, plumbing pipe, garage maintenance, mechanical, and much more. During the installation of threaded grooves, the installation mandrel must be used after stretching the O-ring. The mandrel must be free of burrs and sharp edges. During installation, hold both sides of the rubber ring with both hands and rotate it with both hands. Please confirm the required size and hardware before purchase, and put it in the right place.The structure and material of the product may cause measurement errors.Before installation, please evenly apply lubricating oil on the product, and then use auxiliary tools to locate and install manually.