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 6135-00-683-0536
NSN 5930-00-119-1278
NSN 5910-01-323-7086
NSN 6220-01-383-2155
NSN 5925-01-013-8330
NSN 5910-01-106-4238
NSN 6620-00-513-0738
NSN 5945-01-123-5506
NSN 5935-01-184-0771
NSN 5925-00-016-3758
NSN 6320-01-550-3420
NSN 6150-01-399-7843