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 5910-01-440-3450
NSN 6105-01-313-0293
NSN 6135-01-594-6107
NSN 6135-00-553-7995
NSN 5945-01-471-4818
NSN 5985-01-579-5584
NSN 6105-01-580-2682
NSN 5975-01-261-6328
NSN 5990-00-752-2126
NSN 6105-01-494-3848
NSN 5945-01-516-3266
NSN 6135-01-196-7399