O-Rings Assortment Kit, 200pcs Metric Rubber Seal Rings Set for Plumbing Automotive Repair

1. They are circular in shape, round in cross-section. For use across a wide temperature range from -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C).
2. Buna N or Nitrile has good mechanical properties when compared with other elastomers and high wear resistance. Good resistance to many petroleum oils, greases, hydraulic fluids, alcohol, mineral oil and grease.
3. This O-ring is made of black nitrile rubber, has a durometer of 50A, and is designed for use in a wide variety of sealing applications.
4. O-rings commonly provide a pressure and fluid seal between cylindrically shaped, overlapping mating surfaces and are commonly seen in engines, faucets, flanges, valves, and various cylinders.
5. Buna-nitrile is vulnerable to acetone, ethers, esters, ozone, sunlight and weathering and should therefore not be used in ozone-generating electric motors, welding equipment, or in applications with exposure to UV light.

Package Content(Quantity*Outer Diameter*Cross-Section Diameter):
20pcs*6mmx 1.9 mm 20pcs*7mmx 1.9 mm
20pcs*8mmx 1.9 mm 20pcs*9mmx 1.9 mm
20pcs*10mmx 1.9 mm 15pcs*12mmx 2.4 mm
15pcs*14mmx 2.4 mm 15pcs*16mmx 2.4 mm
15pcs*18mmx 2.4 mm 15pcs*20mmx 2.4 mm
5pcs*24mmx 3.1 mm 5pcs*25mmx 3.1 mm
5pcs*26mmx 3.1 mm 5pcs*28mmx 3.1 mm
5pcs*30mmx 3.1 mm