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 5910-01-470-6621
NSN 5965-00-201-1167
NSN 6110-01-096-6084
NSN 5950-01-458-2265
NSN 6320-00-382-7825
NSN 5985-01-535-9418
NSN 5945-00-477-8773
NSN 5925-01-488-9668
NSN 5975-01-200-6048
NSN 5835-01-157-5886
NSN 6135-01-159-3032
NSN 5930-01-370-3516