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 5920-01-458-5146
NSN 5930-01-080-9724
NSN 5905-01-495-0144
NSN 6145-00-621-0225
NSN 5960-01-192-3128
NSN 5925-01-406-9898
NSN 6645-01-519-6324
NSN 5915-01-496-2314
NSN 6110-00-968-8284
NSN 5920-01-228-3030
NSN 7035-01-190-7332
NSN 4140-00-990-3311