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 5998-01-450-7708
NSN 5895-00-937-0143
NSN 5999-01-304-2066
NSN 5945-01-592-5926
NSN 6130-00-598-2034
NSN 5999-01-550-5938
NSN 5930-00-084-4309
NSN 5895-01-510-4198
NSN 6130-01-532-8974
NSN 6130-01-489-1595
NSN 6645-00-803-6417
NSN 6130-00-643-4894