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 6240-00-959-6735
NSN 6240-01-063-7685
NSN 5930-01-211-1949
NSN 7035-01-440-8877
NSN 5996-01-123-9038
NSN 6150-00-360-9348
NSN 5996-00-633-6912
NSN 6240-01-466-0446
NSN 5960-01-474-4843
NSN 5905-01-065-5333
NSN 4140-01-606-1883
NSN 5855-01-611-4213