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 6645-00-406-8114
NSN 6105-00-189-0515
NSN 5950-01-447-4401
NSN 6150-01-612-1728
NSN 4140-01-622-6028
NSN 5910-00-947-4694
NSN 5960-01-539-1956
NSN 5895-01-509-1383
NSN 6150-00-992-8822
NSN 5985-01-233-0512
NSN 6240-01-186-0263
NSN 6650-01-613-8063