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 6645-01-381-6084
NSN 5996-01-383-7018
NSN 5998-01-633-1817
NSN 5910-01-581-9386
NSN 5920-01-167-8908
NSN 5950-01-297-8508
NSN 5855-01-582-3974
NSN 2925-00-519-0766
NSN 5915-01-437-7150
NSN 5935-01-443-5170
NSN 7035-00-931-3684
NSN 5930-01-314-8385