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 4140-00-170-5152
NSN 6105-01-537-2445
NSN 5905-01-117-8825
NSN 5965-00-854-2075
NSN 6135-01-090-5365
NSN 5835-01-561-2959
NSN 5996-00-568-8288
NSN 5985-01-583-9318
NSN 5920-00-520-6169
NSN 5855-01-436-7621
NSN 5990-01-437-4876
NSN 5910-00-871-6527