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 6320-01-245-5307
NSN 5930-01-377-9978
NSN 5990-01-231-1214
NSN 6145-01-407-9009
NSN 6685-01-420-2478
NSN 6220-00-870-6061
NSN 5985-01-251-0844
NSN 5895-01-432-4636
NSN 6110-01-497-1816
NSN 5855-01-295-2313
NSN 5925-01-347-9161
NSN 4140-00-770-6731