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 5855-01-023-3727
NSN 5835-00-941-4959
NSN 5835-01-254-8584
NSN 5905-01-358-3222
NSN 6645-01-096-9719
NSN 6620-00-469-1179
NSN 5960-01-488-5817
NSN 5998-01-406-5713
NSN 5975-01-236-9174
NSN 5905-01-493-9414
NSN 6610-01-224-7247
NSN 6150-01-364-1023