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 5998-01-127-2147
NSN 5985-01-565-7852
NSN 6645-01-262-7318
NSN 6620-00-877-3266
NSN 5925-01-555-8524
NSN 5965-01-280-3772
NSN 6105-01-245-8932
NSN 5905-00-780-5770
NSN 5930-01-051-7895
NSN 5920-01-323-6369
NSN 5950-01-628-0543
NSN 6220-01-459-3128