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 5910-01-146-0338
NSN 5935-00-378-9285
NSN 5975-01-170-7837
NSN 6645-01-571-1234
NSN 4140-01-163-3724
NSN 6240-01-062-1684
NSN 6240-00-449-2070
NSN 5975-00-314-6811
NSN 5985-00-293-8322
NSN 5960-00-605-9192
NSN 5999-01-487-9424
NSN 6135-01-618-2199