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 5905-01-502-3400
NSN 5998-01-384-3842
NSN 5945-01-268-1827
NSN 6610-00-765-7174
NSN 6685-01-498-1900
NSN 5945-01-518-5675
NSN 5895-01-196-0285
NSN 5920-00-387-5312
NSN 6145-01-030-7798
NSN 6150-00-786-7878
NSN 6650-00-726-4242
NSN 5975-01-146-2852