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 6620-01-411-7382
NSN 5915-01-629-4204
NSN 6645-00-998-2918
NSN 6240-00-702-9068
NSN 5990-01-532-0670
NSN 6620-01-014-7192
NSN 6685-00-889-1579
NSN 6130-01-553-0243
NSN 5930-01-181-5605
NSN 5910-01-610-6753
NSN 6105-01-607-6572
NSN 5975-01-580-0748