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 4140-01-158-6507
NSN 6320-01-207-9038
NSN 7035-00-079-7189
NSN 5960-01-605-9921
NSN 6685-01-587-2942
NSN 6685-01-211-6590
NSN 5905-00-106-1249
NSN 5930-00-397-2903
NSN 5910-01-555-7751
NSN 6130-01-646-1766
NSN 6145-00-316-9072
NSN 5965-01-577-5147