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 5950-00-505-5777
NSN 5999-01-131-4680
NSN 5910-01-119-6653
NSN 5855-01-398-3181
NSN 6685-01-272-9247
NSN 6620-01-095-8937
NSN 5920-01-073-8713
NSN 6135-01-482-1290
NSN 5895-00-901-2186
NSN 5985-01-102-5444
NSN 5999-00-153-9671
NSN 6220-00-376-8103