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 6320-01-466-4175
NSN 5985-00-754-0658
NSN 5999-00-562-7025
NSN 5996-00-785-8106
NSN 6145-01-453-9191
NSN 5930-01-276-5622
NSN 6650-01-385-3190
NSN 6320-01-173-7950
NSN 5999-01-112-9111
NSN 5920-01-432-0499
NSN 5950-01-029-3605
NSN 5965-00-147-3070