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 5990-00-128-6289
NSN 5910-00-916-8071
NSN 6650-00-941-2585
NSN 6320-01-415-0953
NSN 6150-00-583-9878
NSN 5855-00-361-0167
NSN 5990-00-147-3144
NSN 5960-00-104-5955
NSN 7035-00-626-1958
NSN 5915-01-146-0439
NSN 6320-01-173-7950
NSN 7035-01-624-6433