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 4140-00-350-7489
NSN 6105-00-111-2546
NSN 5950-01-335-5480
NSN 6685-01-004-0708
NSN 6145-01-060-0973
NSN 6130-01-050-9866
NSN 5996-01-476-7550
NSN 6240-00-960-8458
NSN 5950-01-274-2275
NSN 5915-01-424-0767
NSN 6240-01-387-7178
NSN 5935-00-267-5569