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 6610-01-471-5599
NSN 6150-01-571-2228
NSN 4140-01-539-4354
NSN 5965-01-069-5650
NSN 5930-01-433-0319
NSN 6610-00-225-5857
NSN 6610-01-278-9704
NSN 5998-00-982-2079
NSN 5895-00-006-0197
NSN 6220-00-263-4893
NSN 5905-01-223-7666
NSN 5960-00-140-9583