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 6145-00-233-6010
NSN 5945-00-776-1596
NSN 6320-01-607-1491
NSN 5905-01-460-4209
NSN 4140-01-442-6442
NSN 6320-00-725-0754
NSN 6645-00-739-6718
NSN 5920-01-232-7465
NSN 6240-01-481-1796
NSN 5930-01-631-2254
NSN 5990-01-430-4651
NSN 6240-01-066-9905