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 5985-01-052-1273
NSN 2925-01-600-2309
NSN 6150-01-441-2254
NSN 5998-01-401-5396
NSN 6650-01-498-2189
NSN 5998-01-399-5982
NSN 5945-00-244-1561
NSN 6620-01-580-0883
NSN 5985-00-288-6001
NSN 6240-01-315-9303
NSN 6110-01-075-5354
NSN 5945-00-556-6334