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 5930-01-394-9509
NSN 5925-00-823-6138
NSN 5945-01-232-5643
NSN 4140-01-400-3610
NSN 6105-01-401-5361
NSN 5985-00-626-9051
NSN 6135-00-643-4843
NSN 5915-01-193-5275
NSN 5950-01-377-7622
NSN 5965-01-383-4675
NSN 6150-00-570-7793
NSN 5960-00-551-2633