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 4140-01-504-2917
NSN 6145-01-027-9030
NSN 5920-01-361-5221
NSN 5895-00-518-4954
NSN 6645-01-473-0461
NSN 6110-01-503-2385
NSN 5855-01-191-3404
NSN 5835-00-471-2660
NSN 6650-01-228-5094
NSN 5985-01-607-6554
NSN 6610-01-633-8931
NSN 5996-00-186-8709