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 5930-01-178-1602
NSN 5920-01-058-1778
NSN 6150-01-187-5824
NSN 4140-00-453-5753
NSN 6320-01-207-0636
NSN 5910-01-167-8473
NSN 6110-01-497-1816
NSN 5975-01-386-5720
NSN 5855-01-425-1041
NSN 5925-00-981-8551
NSN 4140-01-618-6417
NSN 6110-01-645-4807