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 6620-00-663-8962
NSN 7035-01-210-0493
NSN 5930-01-448-1828
NSN 5998-01-359-6606
NSN 5999-00-879-2163
NSN 5895-01-268-2295
NSN 4140-01-078-8601
NSN 2925-00-957-7329
NSN 6110-01-154-7066
NSN 6110-00-516-8645
NSN 6650-01-434-6434
NSN 6645-01-428-3576