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 5935-01-461-3196
NSN 5915-01-292-4660
NSN 5915-00-088-7456
NSN 6650-01-376-6965
NSN 5996-01-287-6879
NSN 5925-01-169-8205
NSN 5910-01-424-8786
NSN 6650-01-227-1632
NSN 5975-00-944-4177
NSN 5985-01-116-2604
NSN 6610-01-371-3006
NSN 6150-00-108-6350