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 6145-01-006-5530
NSN 6240-00-113-8820
NSN 5998-00-778-8475
NSN 6145-00-258-3608
NSN 6220-01-574-2046
NSN 5996-01-177-2848
NSN 6645-01-633-1852
NSN 5835-01-079-9533
NSN 5945-00-051-4008
NSN 6320-00-456-0836
NSN 5985-01-246-5266
NSN 5935-01-263-3928