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 6150-01-543-0080
NSN 6145-00-975-4457
NSN 6620-01-633-8443
NSN 6220-01-582-2571
NSN 5950-01-648-0061
NSN 6645-01-227-2036
NSN 5925-01-291-6863
NSN 6130-00-528-1266
NSN 6240-01-045-9269
NSN 5895-00-471-0530
NSN 5965-01-382-9081
NSN 5905-01-179-3747