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 6610-01-575-8421
NSN 6110-01-123-7285
NSN 5965-01-557-4854
NSN 6610-01-229-3679
NSN 6110-00-494-9135
NSN 6645-01-170-7368
NSN 5985-01-430-9114
NSN 5945-01-469-7950
NSN 5920-01-130-5123
NSN 5915-01-157-9502
NSN 5990-01-287-9447
NSN 5998-00-677-4208