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 5930-00-185-9492
NSN 6130-01-020-9004
NSN 5925-00-636-5683
NSN 7035-01-128-7431
NSN 5920-01-069-9833
NSN 6620-01-383-1997
NSN 6645-00-527-6531
NSN 6145-01-416-2413
NSN 5855-01-191-3404
NSN 5895-01-096-3729
NSN 5915-01-312-9844
NSN 6135-01-329-7994