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 6620-01-088-1272
NSN 5960-00-677-7444
NSN 6645-01-252-8870
NSN 4140-00-764-5287
NSN 5855-00-821-7512
NSN 5998-01-339-3309
NSN 2925-00-021-9580
NSN 5960-01-108-8231
NSN 5895-01-068-4355
NSN 6150-00-878-1248
NSN 5895-01-521-9854
NSN 5930-01-513-7771