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 6610-01-400-3880
NSN 5996-01-448-2754
NSN 5915-01-135-8164
NSN 5925-00-224-7474
NSN 6650-00-575-0770
NSN 5920-01-543-6348
NSN 6650-00-061-2232
NSN 5855-01-641-2736
NSN 4140-01-434-6292
NSN 5835-01-045-3371
NSN 5965-01-036-9945
NSN 5910-01-492-6028