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 5965-01-201-8399
NSN 2925-01-199-7394
NSN 5950-01-322-9494
NSN 4140-00-351-5789
NSN 5910-01-633-9963
NSN 5965-00-920-0455
NSN 5935-01-438-1955
NSN 5910-00-996-0741
NSN 6620-01-461-3550
NSN 5965-01-037-1720
NSN 5945-01-525-0401
NSN 5975-01-295-6290