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 5855-01-340-3447
NSN 6610-00-244-2816
NSN 5996-00-939-2346
NSN 5945-00-248-2973
NSN 5975-01-356-1664
NSN 5975-01-356-6962
NSN 6130-00-397-7690
NSN 5950-01-181-5608
NSN 5998-01-230-3029
NSN 6145-01-174-0641
NSN 4140-01-558-6831
NSN 6240-01-084-8637