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 5895-01-522-6667
NSN 5998-00-661-0380
NSN 6620-01-147-5615
NSN 5950-00-510-6623
NSN 7035-01-227-2546
NSN 5895-01-083-7958
NSN 6105-01-196-5444
NSN 5935-01-062-8661
NSN 5920-00-238-6491
NSN 5990-01-097-4721
NSN 6145-01-419-6050
NSN 6145-01-112-0397