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 5835-00-529-6307
NSN 5855-00-310-2740
NSN 2925-00-095-9451
NSN 5835-01-062-2235
NSN 5835-01-632-6627
NSN 6240-00-832-6867
NSN 5935-01-244-7339
NSN 5915-01-444-5873
NSN 5925-01-581-3723
NSN 6130-01-014-5419
NSN 5855-01-526-0131
NSN 6645-01-395-2989