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 6220-00-303-3611
NSN 6685-01-551-8109
NSN 5998-00-942-1023
NSN 6145-00-936-0083
NSN 4140-01-366-6666
NSN 5999-00-008-7036
NSN 6685-00-938-5649
NSN 6110-01-200-8237
NSN 6610-01-094-4524
NSN 5965-01-276-9586
NSN 5985-01-159-9182
NSN 5965-01-362-5624