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 6320-00-994-0179
NSN 5998-01-434-6255
NSN 7035-00-679-9027
NSN 4140-00-620-9681
NSN 6145-01-077-3242
NSN 5960-00-560-7147
NSN 6645-01-529-5690
NSN 5855-01-576-4223
NSN 6645-00-390-7657
NSN 6685-01-183-5481
NSN 4140-01-519-9343
NSN 6110-01-381-0300