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 6650-01-397-6325
NSN 6150-00-580-0511
NSN 6135-00-488-4478
NSN 5915-00-824-0196
NSN 5985-01-608-7865
NSN 5945-00-204-0041
NSN 5950-00-175-7294
NSN 5990-00-246-2184
NSN 5905-00-835-2660
NSN 4140-00-069-5154
NSN 5950-01-039-4129
NSN 6130-01-407-0148