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 5996-01-123-9038
NSN 6240-00-372-4841
NSN 6610-00-484-2662
NSN 6130-01-185-4225
NSN 5975-01-510-9722
NSN 5920-00-438-4973
NSN 5930-01-486-1979
NSN 5895-01-528-6831
NSN 5910-01-337-4826
NSN 6220-00-054-5741
NSN 5990-01-167-3030
NSN 5985-00-202-5867