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 5998-01-610-7462
NSN 5935-01-237-2498
NSN 4140-00-444-7781
NSN 5935-00-230-4552
NSN 5999-01-227-2526
NSN 6150-01-301-2342
NSN 5935-01-596-9936
NSN 5990-00-691-2697
NSN 6130-01-055-6219
NSN 2925-01-206-7948
NSN 5835-01-068-4043
NSN 6130-01-467-5088