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 6620-00-060-6801
NSN 6220-01-013-9498
NSN 6685-01-318-6540
NSN 5915-01-557-5332
NSN 5910-00-113-5499
NSN 5950-01-391-2547
NSN 5910-01-442-5697
NSN 5950-00-907-5110
NSN 5975-01-411-5382
NSN 5960-01-117-1887
NSN 5930-01-134-8904
NSN 7035-01-352-6235