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 6240-01-502-7280
NSN 5945-01-615-3662
NSN 5945-01-293-4892
NSN 5915-00-903-0872
NSN 6150-01-290-4646
NSN 5996-01-052-1693
NSN 6610-00-639-3615
NSN 5855-00-014-5008
NSN 6220-01-169-1613
NSN 5935-00-267-5569
NSN 5930-00-623-0416
NSN 5910-01-558-9720