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 5930-01-440-1782
NSN 2925-01-368-1333
NSN 5920-01-423-8595
NSN 6220-00-489-1440
NSN 5945-01-253-0357
NSN 6135-00-269-5843
NSN 5905-00-372-5214
NSN 6240-01-600-7489
NSN 6320-01-161-6640
NSN 6220-00-425-3346
NSN 5920-00-269-6178
NSN 5990-01-430-4651