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 5985-01-406-4274
NSN 6620-01-623-7266
NSN 5935-00-246-5280
NSN 6145-00-565-9560
NSN 6105-01-363-9225
NSN 6135-00-951-3426
NSN 4140-01-611-5424
NSN 5915-01-655-1413
NSN 5965-01-186-2051
NSN 4140-01-058-3844
NSN 6145-01-161-5557
NSN 5999-00-160-6857