A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6650-01-411-6292
NSN 6645-01-428-3576
NSN 4140-01-387-9698
NSN 2925-00-228-8854
NSN 5996-01-433-7082
NSN 5935-01-424-0271
NSN 6135-01-433-2062
NSN 6320-01-180-9908
NSN 5910-00-923-9082
NSN 5950-00-362-5661
NSN 5920-01-616-0910
NSN 6645-01-240-5499