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 5920-00-267-0565
NSN 5905-01-206-3944
NSN 5925-00-467-1738
NSN 5835-00-348-8549
NSN 5945-00-395-2572
NSN 6240-00-993-5016
NSN 5950-00-420-5744
NSN 6110-00-202-1021
NSN 5996-01-287-8311
NSN 5910-00-630-5635
NSN 5999-01-246-0559
NSN 7035-00-541-8516