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 5905-01-594-1333
NSN 2925-00-419-5868
NSN 5855-01-199-2046
NSN 5930-00-149-1547
NSN 5910-01-532-6547
NSN 5965-00-318-6482
NSN 5965-01-192-5025
NSN 6650-00-170-5095
NSN 7035-00-088-7355
NSN 4140-01-303-3173
NSN 5945-01-326-3885
NSN 5835-00-401-2578