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 5975-00-765-4271
NSN 6650-01-365-4286
NSN 5915-00-473-2112
NSN 5930-00-229-3917
NSN 5999-01-624-0506
NSN 5915-01-085-1762
NSN 6240-00-168-1474
NSN 5835-00-601-1402
NSN 5950-00-753-7577
NSN 5965-01-255-4192
NSN 6105-01-521-3937
NSN 5985-01-284-8903