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 7035-01-413-6697
NSN 5998-01-167-0413
NSN 5999-00-894-4632
NSN 5990-00-288-1820
NSN 6610-01-528-5750
NSN 5996-00-655-2670
NSN 6145-01-641-7703
NSN 5960-00-156-0702
NSN 5975-01-208-4753
NSN 6150-00-320-1470
NSN 5935-00-639-1382
NSN 5996-01-510-6551