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 6135-01-561-5945
NSN 4140-01-197-4273
NSN 5985-01-446-9223
NSN 5835-01-519-3834
NSN 5985-01-116-7887
NSN 5996-01-059-4588
NSN 5910-01-371-9105
NSN 5915-01-462-0432
NSN 5895-01-309-3118
NSN 5996-00-243-1418
NSN 5835-01-406-5943
NSN 5895-01-469-6120