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 5855-00-361-0167
NSN 5835-00-393-1996
NSN 5910-00-936-3930
NSN 6240-00-155-5817
NSN 5990-01-118-8624
NSN 5950-01-422-1361
NSN 5999-01-587-5968
NSN 5985-01-145-2200
NSN 6620-01-461-3550
NSN 4140-01-519-9343
NSN 6220-00-420-1245
NSN 5905-01-421-0560