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 5930-01-087-8077
NSN 6105-00-987-7935
NSN 5999-01-187-4751
NSN 6610-00-883-5160
NSN 6220-00-130-1258
NSN 5998-01-125-1052
NSN 6110-01-350-2533
NSN 6110-00-038-7230
NSN 5930-01-330-7219
NSN 5975-01-512-4825
NSN 6135-01-167-7604
NSN 5910-00-181-5882