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 5935-01-116-0351
NSN 5835-01-464-2662
NSN 2925-00-338-4667
NSN 6110-00-099-7113
NSN 5905-00-233-7524
NSN 6135-01-537-1234
NSN 5965-01-648-2590
NSN 5915-00-361-9148
NSN 5915-00-928-1543
NSN 6145-01-417-8912
NSN 5990-01-497-9249
NSN 5998-01-351-0713