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 5945-00-819-1131
NSN 6240-00-299-9819
NSN 5950-00-272-9398
NSN 5930-01-367-1857
NSN 6110-01-379-5534
NSN 6320-00-593-0379
NSN 5996-00-778-2849
NSN 5935-01-401-5324
NSN 5915-00-944-0218
NSN 5975-01-471-5861
NSN 5985-01-166-5041
NSN 5930-00-384-3295