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 5975-00-021-7127
NSN 6620-01-590-3295
NSN 6220-01-576-2625
NSN 6650-01-210-2080
NSN 5910-00-151-7564
NSN 5930-01-158-5694
NSN 6320-00-908-6841
NSN 6220-01-579-5244
NSN 2925-01-106-3552
NSN 5999-00-556-6313
NSN 5920-00-905-4769
NSN 5996-01-287-8311