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 5935-00-280-2354
NSN 5930-00-143-1017
NSN 6645-01-633-1852
NSN 5930-01-288-5954
NSN 5920-01-020-7659
NSN 6645-01-072-2486
NSN 5920-01-189-0115
NSN 5930-00-389-9275
NSN 5855-01-053-6782
NSN 5895-01-018-1618
NSN 5855-01-360-6650
NSN 5915-01-227-6177