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 6620-01-088-1272
NSN 6130-00-185-4522
NSN 5975-00-704-0334
NSN 6620-01-546-4942
NSN 5950-01-510-8420
NSN 6620-00-555-3992
NSN 6150-01-052-8096
NSN 6150-00-868-7953
NSN 5920-00-984-3554
NSN 6240-01-558-8446
NSN 5945-01-562-4652
NSN 5945-01-233-3759