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 5935-01-381-2384
NSN 6650-01-324-6458
NSN 5990-01-105-0260
NSN 6105-00-877-6505
NSN 6240-00-660-8849
NSN 5945-00-821-4465
NSN 7035-01-426-4133
NSN 6645-01-085-2885
NSN 6620-00-079-0311
NSN 5910-01-466-3504
NSN 6130-01-180-3820
NSN 6620-00-596-1951