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 6220-01-212-3254
NSN 6645-01-514-7403
NSN 5920-00-064-3523
NSN 6130-00-444-4871
NSN 2925-01-515-3032
NSN 5855-00-079-2370
NSN 6145-00-135-1436
NSN 6145-00-408-9976
NSN 5920-01-358-6930
NSN 5835-01-167-1824
NSN 6105-01-153-2302
NSN 6645-00-580-9605