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 6135-00-866-2311
NSN 5915-01-049-1973
NSN 6150-01-417-3389
NSN 5965-01-250-8542
NSN 5920-01-552-4575
NSN 2925-00-497-7808
NSN 5990-01-480-4294
NSN 5975-01-268-1945
NSN 5910-00-490-7998
NSN 5985-01-032-6251
NSN 5835-00-433-0170
NSN 5910-01-586-1918