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 5950-01-381-1324
NSN 6320-00-937-5625
NSN 5990-01-426-7350
NSN 5985-00-722-7462
NSN 5920-00-835-0615
NSN 5999-01-408-7913
NSN 6130-00-865-6558
NSN 6620-01-280-3516
NSN 5998-01-579-2998
NSN 2925-00-614-1758
NSN 5855-01-615-2311
NSN 6620-00-810-2434