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 6110-01-088-2988
NSN 6220-01-461-9180
NSN 6105-01-189-8822
NSN 5920-01-241-3227
NSN 6145-00-212-0422
NSN 6645-01-633-1852
NSN 6220-01-189-1290
NSN 7035-01-139-2637
NSN 5990-01-514-8708
NSN 5895-00-869-7693
NSN 6220-00-817-8692
NSN 5855-01-205-7030