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 5990-01-037-1704
NSN 5975-01-248-9329
NSN 6110-01-170-8833
NSN 4140-01-492-4797
NSN 5915-00-291-3736
NSN 5975-01-270-5563
NSN 5855-00-548-4742
NSN 5855-01-179-2702
NSN 5975-01-400-4204
NSN 5996-01-536-4110
NSN 6105-01-591-6694
NSN 5960-01-439-9517