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 2925-01-021-7563
NSN 5999-01-383-5937
NSN 5998-00-784-1230
NSN 5855-01-499-6147
NSN 5930-01-507-9830
NSN 6645-01-136-4447
NSN 6645-01-633-1852
NSN 5915-01-233-2090
NSN 2925-01-347-4208
NSN 6105-01-107-3140
NSN 5915-00-696-2048
NSN 5985-00-244-1378