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 5915-01-255-2465
NSN 5910-01-181-6650
NSN 5930-01-489-0913
NSN 5855-01-147-6024
NSN 6620-01-164-0590
NSN 5960-01-185-4216
NSN 5960-01-628-2760
NSN 5990-01-009-1422
NSN 6620-00-905-6590
NSN 6240-00-139-5367
NSN 6645-01-227-2036
NSN 5945-00-079-6998