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 5975-01-371-2087
NSN 5975-01-013-2391
NSN 7035-00-185-8683
NSN 6685-01-102-5259
NSN 5960-01-502-6270
NSN 4140-00-962-0215
NSN 5925-01-191-4068
NSN 5998-00-992-1610
NSN 5998-00-695-4920
NSN 5975-00-505-2626
NSN 5965-00-615-0758
NSN 6620-01-253-0374