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 5950-01-120-7775
NSN 5965-00-372-2537
NSN 5905-01-235-4854
NSN 6145-01-202-7769
NSN 5999-01-294-0132
NSN 6130-01-430-7193
NSN 4140-01-369-2959
NSN 5990-00-016-5648
NSN 2925-00-968-6339
NSN 4140-01-255-0282
NSN 5960-01-322-0732
NSN 5999-00-740-4148