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 5935-01-014-6185
NSN 5930-01-026-2268
NSN 5935-00-723-0349
NSN 5835-00-447-1924
NSN 5920-00-233-3552
NSN 6320-01-449-1014
NSN 5895-01-322-7982
NSN 6240-01-123-8822
NSN 5895-01-284-9197
NSN 6320-00-228-5678
NSN 6240-01-581-2000
NSN 5895-00-257-5945