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 2925-01-633-4048
NSN 5910-00-821-5578
NSN 5920-01-212-1536
NSN 5925-01-312-1775
NSN 6150-00-922-0795
NSN 6320-01-207-0636
NSN 5910-00-954-1603
NSN 5930-01-509-7461
NSN 5975-00-240-2646
NSN 5960-01-188-4558
NSN 5990-01-649-0635
NSN 5915-01-133-3683