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 6145-00-603-2608
NSN 6145-01-369-4001
NSN 5990-00-934-3145
NSN 4140-01-546-0385
NSN 5915-01-557-5332
NSN 5915-01-250-6809
NSN 6645-00-784-4256
NSN 6220-01-587-8437
NSN 5855-00-100-9003
NSN 6645-01-447-4139
NSN 6320-01-185-3857
NSN 6130-01-234-8074