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 5985-01-555-2936
NSN 5855-01-434-2825
NSN 5990-01-485-0260
NSN 5935-01-650-6548
NSN 6150-01-088-7643
NSN 5935-00-924-7155
NSN 5910-01-512-1780
NSN 5999-01-634-0576
NSN 5965-00-959-4910
NSN 5985-00-237-5419
NSN 5930-00-273-0778
NSN 5985-00-761-6048