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 6320-01-320-3305
NSN 5998-01-550-1127
NSN 5835-00-003-0295
NSN 4140-01-284-9920
NSN 6145-00-504-5221
NSN 6150-01-067-6438
NSN 6110-00-812-9201
NSN 5935-00-568-9861
NSN 5925-00-603-8077
NSN 6145-01-169-6487
NSN 6130-01-309-3779
NSN 5855-01-096-0872