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 5975-00-518-3275
NSN 5945-01-622-8521
NSN 5965-00-698-0433
NSN 6110-01-052-8081
NSN 6320-00-149-7570
NSN 5945-00-761-9037
NSN 4140-00-061-3110
NSN 6240-01-112-7577
NSN 7035-01-580-5868
NSN 5855-00-532-0025
NSN 6145-00-959-0097
NSN 5855-01-433-2220