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 5990-01-079-3271
NSN 6135-01-643-1793
NSN 5998-01-413-7207
NSN 5945-00-773-2182
NSN 6610-01-078-7796
NSN 6150-00-240-4411
NSN 5930-01-057-9247
NSN 5915-01-238-0049
NSN 5965-01-053-0475
NSN 4140-00-925-9218
NSN 5999-01-139-2482
NSN 5925-00-456-0651