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 6240-00-677-0305
NSN 5975-01-416-0394
NSN 6220-01-163-4901
NSN 6650-00-850-3312
NSN 5925-00-146-5683
NSN 5920-01-212-1536
NSN 5910-00-415-8186
NSN 6220-01-045-0306
NSN 5910-00-851-0361
NSN 6645-00-952-4509
NSN 5925-01-519-6024
NSN 5920-01-401-5315