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 5999-01-176-2149
NSN 6135-01-529-8523
NSN 6220-00-799-4230
NSN 5975-00-288-5877
NSN 5985-00-225-8924
NSN 5935-01-439-5052
NSN 6110-01-018-6348
NSN 5985-00-277-7371
NSN 5975-00-270-6759
NSN 6320-00-546-9249
NSN 6135-01-435-8451
NSN 7035-01-403-2841