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 5855-01-316-4975
NSN 7035-00-238-3662
NSN 5985-01-245-4453
NSN 5855-01-406-4821
NSN 6150-00-011-8938
NSN 5985-01-024-8193
NSN 5905-01-407-1050
NSN 6110-00-163-6223
NSN 6320-01-220-2264
NSN 6135-00-444-1402
NSN 5910-01-083-8385
NSN 5915-01-084-7251