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 5905-00-522-5075
NSN 5945-01-318-1583
NSN 5990-00-451-7630
NSN 5996-00-467-9648
NSN 6130-01-032-7235
NSN 7035-00-513-9764
NSN 5925-01-013-9650
NSN 6110-00-833-7778
NSN 7035-01-580-3814
NSN 5925-00-279-6769
NSN 5920-00-860-0456
NSN 6220-00-075-0751