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 5950-00-011-8379
NSN 5910-01-425-2677
NSN 5960-00-263-0106
NSN 6110-01-407-1353
NSN 5910-01-580-2185
NSN 5985-01-529-6488
NSN 5965-01-035-6842
NSN 6110-01-542-8607
NSN 6320-01-373-9355
NSN 5975-00-477-7197
NSN 6110-00-187-4537
NSN 6650-01-381-7172