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 6645-01-500-0827
NSN 5920-01-044-5621
NSN 5998-01-237-3432
NSN 7035-01-291-6468
NSN 5950-00-246-9755
NSN 6105-01-212-9245
NSN 5910-00-548-3843
NSN 6650-00-804-2039
NSN 6150-01-505-0479
NSN 5945-01-515-9535
NSN 6150-01-158-9433
NSN 5975-01-658-8009