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 5960-01-052-5039
NSN 5960-00-481-6677
NSN 6150-00-222-5302
NSN 6320-01-211-6578
NSN 6150-01-607-0426
NSN 5990-00-683-1095
NSN 6240-01-034-5596
NSN 5935-00-008-8686
NSN 5960-00-085-3995
NSN 5920-00-339-0338
NSN 4140-01-290-4026
NSN 5835-00-711-3371