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 6620-01-608-2682
NSN 5965-00-436-2226
NSN 6320-01-195-5583
NSN 6610-01-502-8868
NSN 6650-01-382-3870
NSN 6650-01-373-4159
NSN 6620-00-411-2048
NSN 6110-01-170-4066
NSN 5895-01-123-4354
NSN 5975-00-193-3083
NSN 6130-00-484-9291
NSN 5999-01-423-6268