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 5965-01-415-6351
NSN 5998-00-558-5851
NSN 5945-00-236-7144
NSN 6220-01-223-2139
NSN 5975-00-218-0414
NSN 6240-00-266-6258
NSN 5998-01-512-3515
NSN 6320-01-284-4508
NSN 5965-01-245-1552
NSN 5920-00-246-4657
NSN 5950-01-606-9819
NSN 5985-00-081-1885