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 5945-00-078-2265
NSN 5999-01-100-0768
NSN 5920-01-029-3813
NSN 5920-00-238-6491
NSN 6320-00-036-3688
NSN 7035-01-386-5722
NSN 5930-00-463-9861
NSN 4140-00-828-1421
NSN 5990-01-054-3332
NSN 5999-00-810-0176
NSN 2925-01-299-6967
NSN 5855-01-180-5369