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 5930-00-134-9498
NSN 5965-00-400-6228
NSN 6150-01-252-8527
NSN 6145-00-199-8066
NSN 5835-01-193-6192
NSN 5950-01-525-8127
NSN 4140-01-534-9987
NSN 6135-00-826-4798
NSN 5960-01-098-1170
NSN 5996-00-284-9711
NSN 5920-01-128-0861
NSN 5985-01-474-4409