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 6620-01-238-9224
NSN 2925-01-274-8576
NSN 6650-00-269-5000
NSN 5920-01-422-1445
NSN 5910-01-319-6254
NSN 5895-00-263-0755
NSN 6645-01-051-7447
NSN 5996-01-048-1285
NSN 2925-01-484-8556
NSN 5895-01-048-6433
NSN 5999-01-502-5899
NSN 5835-01-142-9233