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 5945-00-679-3960
NSN 7035-01-150-6303
NSN 6110-01-131-0838
NSN 6220-01-346-2688
NSN 6320-01-399-6177
NSN 5999-01-042-8712
NSN 5925-00-233-5125
NSN 5855-01-069-1341
NSN 5930-00-452-4552
NSN 5996-01-527-5379
NSN 6145-00-186-6291
NSN 5975-00-651-3919