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 5996-01-595-4092
NSN 2925-01-257-0695
NSN 5910-00-548-3843
NSN 5999-01-193-8312
NSN 5935-01-481-6696
NSN 5925-00-051-2003
NSN 5920-00-182-9948
NSN 6320-00-893-2857
NSN 6135-00-548-2765
NSN 5835-00-269-2232
NSN 5965-01-640-7104
NSN 5920-01-118-0309