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 5990-01-296-8190
NSN 7035-01-650-8376
NSN 6320-00-483-0451
NSN 5915-00-681-6299
NSN 5835-01-178-4154
NSN 6240-00-635-9953
NSN 5930-01-574-8792
NSN 5985-00-244-5147
NSN 5996-00-646-5310
NSN 5998-01-444-1553
NSN 6685-00-938-5649
NSN 4140-00-295-0787