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 2925-00-365-3289
NSN 6105-01-515-1231
NSN 6645-00-273-1203
NSN 2925-01-138-0808
NSN 6320-01-543-3238
NSN 6240-01-113-2396
NSN 4140-01-609-7987
NSN 5930-01-498-1760
NSN 6145-00-295-1503
NSN 5935-01-261-4227
NSN 5935-00-430-5774
NSN 5915-00-814-0602