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 6150-01-607-9565
NSN 5985-01-370-1084
NSN 5999-01-388-7578
NSN 6150-00-727-2860
NSN 5835-01-074-7593
NSN 6135-00-307-6998
NSN 5965-01-245-1552
NSN 5915-00-216-5909
NSN 6620-01-633-8443
NSN 5996-01-169-4794
NSN 5996-01-041-6141
NSN 6145-01-135-2665