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 5960-01-582-6167
NSN 6220-01-575-3958
NSN 5930-01-224-2909
NSN 5965-00-285-0745
NSN 5975-00-345-1339
NSN 6105-00-936-9771
NSN 2925-00-263-2714
NSN 5925-01-399-0613
NSN 5975-01-544-4023
NSN 6220-00-248-5511
NSN 5835-00-827-1904
NSN 5910-01-421-3340