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 6650-01-367-2949
NSN 5915-01-360-3787
NSN 5935-00-354-2096
NSN 6150-01-444-2689
NSN 5996-00-481-0765
NSN 6685-00-267-0938
NSN 5915-01-167-8506
NSN 5855-01-463-6052
NSN 6135-00-985-7887
NSN 5985-01-366-2503
NSN 5960-00-171-9575
NSN 5985-00-097-9411