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 6650-01-254-2744
NSN 6240-01-063-7685
NSN 5935-00-559-7377
NSN 6610-01-226-2347
NSN 5935-01-421-4371
NSN 5996-01-241-4775
NSN 6240-00-187-4306
NSN 5935-01-310-7795
NSN 5915-00-871-5016
NSN 5855-01-469-8099
NSN 5945-01-261-7849
NSN 6645-01-260-7426