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 6320-01-350-0320
NSN 6620-01-327-3011
NSN 5990-00-863-8628
NSN 5930-01-074-8414
NSN 5960-01-328-8248
NSN 5905-01-065-3665
NSN 6105-01-188-7292
NSN 5895-01-337-2788
NSN 5915-01-184-6270
NSN 6105-01-309-5313
NSN 5998-01-045-9134
NSN 6130-00-283-7948