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 6145-00-403-0005
NSN 5895-00-269-2081
NSN 5990-01-147-5225
NSN 6645-00-420-5072
NSN 6145-01-528-7853
NSN 5945-00-529-0409
NSN 5895-00-240-3295
NSN 5925-01-028-9336
NSN 5950-00-859-4544
NSN 5975-01-050-5728
NSN 6650-01-534-5787
NSN 7035-01-332-9582