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 5935-00-081-1506
NSN 5910-01-522-0632
NSN 5996-01-176-7275
NSN 5910-00-150-8653
NSN 5855-01-657-7657
NSN 6240-01-461-1585
NSN 6220-01-107-6313
NSN 5999-01-649-2190
NSN 6220-01-369-7017
NSN 7035-00-163-6221
NSN 5960-01-334-5146
NSN 5990-01-372-1642