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 5930-01-477-0247
NSN 5950-00-283-7391
NSN 5920-01-291-2805
NSN 5975-00-894-9234
NSN 5975-01-145-3768
NSN 6650-00-985-5332
NSN 6220-00-162-5047
NSN 6150-01-074-4871
NSN 6240-01-422-8178
NSN 5855-00-089-3974
NSN 6685-00-902-4217
NSN 5990-00-982-8030