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 6240-01-357-7182
NSN 6610-00-813-7023
NSN 6685-01-562-2336
NSN 4140-01-519-9343
NSN 5990-01-093-8328
NSN 6220-00-310-9354
NSN 6685-01-199-1304
NSN 6150-01-430-2257
NSN 6135-00-505-0679
NSN 5905-00-482-5415
NSN 5905-00-943-4790
NSN 4140-01-268-1351