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 5920-00-984-8746
NSN 6240-00-123-7648
NSN 6240-00-902-4660
NSN 6620-00-877-3266
NSN 5990-01-293-4817
NSN 6645-01-202-7986
NSN 6240-01-064-2980
NSN 7035-01-146-7096
NSN 5999-01-658-9182
NSN 6320-01-600-0787
NSN 5920-01-188-6458
NSN 5925-01-606-9684