... air compressor o ring 1.thermal aging resistance. 2.Heat resistant. 3.Standard size in stock. 4.Thermal aging resistance. Details of air compressor ... request. 4. Tolerance: strictly upon international standard, no flash.5. Color: black, transparent, green, red, yellow, grey, ... request. 4. Tolerance: strictly upon international standard, no flash.5. Color: black, transparent, green, red, yellow, grey, ...