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 5999-01-099-6671
NSN 5835-01-532-9373
NSN 5915-01-176-4418
NSN 5905-00-064-7221
NSN 5920-01-091-0123
NSN 6320-01-422-0765
NSN 5950-01-156-0409
NSN 5935-00-531-1622
NSN 5975-01-455-5435
NSN 5945-01-524-0544
NSN 5975-01-359-8503
NSN 5905-01-571-8206