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 5960-01-068-4003
NSN 5910-00-466-2252
NSN 6650-01-194-5498
NSN 5915-01-585-4204
NSN 6220-01-157-2930
NSN 5920-01-217-0505
NSN 6645-01-442-4032
NSN 6110-00-116-5514
NSN 5920-01-227-7614
NSN 6145-00-754-8372
NSN 5935-01-596-5456
NSN 6105-00-251-1166