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 6240-00-172-8451
NSN 5975-01-429-0022
NSN 5975-01-044-6729
NSN 2925-01-197-7864
NSN 5975-00-161-4947
NSN 5945-01-168-6569
NSN 5965-01-281-3895
NSN 5965-00-892-3850
NSN 4140-01-399-0330
NSN 5965-01-130-1965
NSN 4140-01-202-3359
NSN 6110-00-181-4303