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 5985-01-634-0635
NSN 5965-00-227-7348
NSN 7035-01-413-2018
NSN 5985-00-189-0953
NSN 5998-00-727-7428
NSN 5975-01-521-5944
NSN 6620-01-022-9868
NSN 6150-00-006-8694
NSN 7035-01-336-0464
NSN 6620-01-578-7561
NSN 6240-00-212-4305
NSN 7035-00-392-5417