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 5925-01-031-7381
NSN 4140-01-528-2531
NSN 5910-01-325-5228
NSN 6650-01-388-8727
NSN 5950-01-042-0482
NSN 5930-01-406-4281
NSN 5985-01-262-6471
NSN 6620-01-026-0346
NSN 5905-01-119-3601
NSN 5965-01-419-4202
NSN 5855-01-620-4801
NSN 5855-01-576-4223