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 4140-01-354-2686
NSN 6650-01-122-0169
NSN 4140-01-183-0618
NSN 7035-00-018-0350
NSN 6150-01-555-4672
NSN 7035-01-420-5404
NSN 5835-01-432-1277
NSN 4140-01-489-5540
NSN 5905-01-468-3578
NSN 5930-00-867-1412
NSN 5930-01-075-5418
NSN 5920-01-343-0294