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 6610-00-081-2229
NSN 4140-00-871-3000
NSN 5895-01-170-9744
NSN 5920-01-029-5887
NSN 5960-01-075-7732
NSN 5925-00-081-9135
NSN 6145-01-236-2673
NSN 6145-01-201-2320
NSN 6145-01-016-7625
NSN 4140-00-810-6994
NSN 2925-00-922-8953
NSN 6105-01-497-5611