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 5910-01-305-1236
NSN 6610-01-487-7256
NSN 5960-00-998-0409
NSN 5998-00-702-5285
NSN 5960-00-508-1913
NSN 5855-00-586-6255
NSN 5915-01-238-9971
NSN 6150-00-222-3772
NSN 4140-01-291-4838
NSN 6610-00-671-8215
NSN 6645-01-296-2301
NSN 5975-01-657-2047