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 5915-01-548-9472
NSN 5960-01-439-9517
NSN 5998-00-038-8334
NSN 6610-00-446-9269
NSN 5999-01-548-5106
NSN 6240-00-460-0569
NSN 5998-01-415-7158
NSN 6240-01-395-9162
NSN 6240-00-448-4310
NSN 4140-01-384-3930
NSN 5920-01-089-3559
NSN 5945-01-648-8528