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 5895-00-736-8814
NSN 6220-00-412-2741
NSN 5925-00-059-4991
NSN 5920-01-473-1760
NSN 5985-00-840-4635
NSN 6685-00-985-5221
NSN 6110-01-597-8686
NSN 5910-00-226-1123
NSN 5925-00-241-1441
NSN 6685-00-186-9190
NSN 5925-01-025-7008
NSN 6620-01-361-4796