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 5905-01-493-4236
NSN 6320-01-308-9392
NSN 4140-01-417-2031
NSN 6240-01-248-0424
NSN 5915-01-369-6967
NSN 6685-01-182-2252
NSN 5910-01-190-4606
NSN 2925-01-411-4666
NSN 5945-00-549-7980
NSN 5930-00-673-9928
NSN 5945-01-296-8659
NSN 6650-01-657-7864