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 5910-01-299-8918
NSN 6320-01-583-6809
NSN 6650-00-539-7298
NSN 6150-01-467-1590
NSN 5905-01-574-9951
NSN 5905-01-571-8599
NSN 5910-01-232-6981
NSN 5895-00-420-7042
NSN 6240-00-963-5417
NSN 7035-00-200-5162
NSN 5985-01-207-0097
NSN 5960-00-163-6998