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 2925-01-032-3814
NSN 5965-00-196-7320
NSN 6110-01-075-2799
NSN 5990-01-374-3877
NSN 5920-01-273-0681
NSN 6685-01-172-1438
NSN 6240-01-437-4121
NSN 5835-01-024-9249
NSN 5910-01-280-6429
NSN 6645-01-400-1137
NSN 5920-01-181-5248
NSN 6145-00-521-0001