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 4140-01-540-7357
NSN 4140-01-503-5643
NSN 6650-00-428-7055
NSN 5998-00-458-5259
NSN 5895-01-045-7267
NSN 5985-00-721-1909
NSN 5935-00-301-3710
NSN 5930-00-555-1866
NSN 6650-00-139-8345
NSN 5965-01-399-4530
NSN 5935-00-079-1308
NSN 5950-01-329-6268