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 5910-01-196-6924
NSN 4140-01-511-0744
NSN 5985-00-218-1356
NSN 7035-01-449-9138
NSN 5925-01-029-3483
NSN 6105-00-007-9617
NSN 5905-00-164-6383
NSN 5998-00-888-9887
NSN 5905-00-592-0068
NSN 5915-00-469-3074
NSN 5925-00-636-5683
NSN 5855-01-346-7682