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 5960-00-104-5955
NSN 4140-01-397-4174
NSN 5985-01-112-2591
NSN 5910-00-340-1802
NSN 5925-01-196-9282
NSN 6145-00-269-4271
NSN 5965-00-096-7370
NSN 6220-01-299-4392
NSN 6240-01-304-4741
NSN 5835-00-185-4919
NSN 5945-01-574-6401
NSN 6240-01-293-3620