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 5855-01-109-6433
NSN 6320-01-123-2476
NSN 6645-01-320-4138
NSN 5895-01-294-1482
NSN 5935-01-340-3519
NSN 2925-01-033-0141
NSN 6620-01-544-1083
NSN 4140-01-400-3610
NSN 5990-01-485-0260
NSN 5945-01-239-1490
NSN 5835-00-491-3834
NSN 5998-01-457-7428