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 5990-00-938-7662
NSN 6240-00-094-7724
NSN 5935-00-862-5158
NSN 6105-00-782-8871
NSN 6645-01-150-2039
NSN 5910-01-039-4894
NSN 5985-01-180-7412
NSN 5999-00-492-6300
NSN 5975-01-315-6378
NSN 6105-00-501-7681
NSN 5996-00-813-3304
NSN 6130-01-568-0814