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 5930-00-710-9890
NSN 5975-01-188-7460
NSN 6150-01-106-2610
NSN 5930-01-225-5992
NSN 5998-00-605-7034
NSN 6135-01-389-8289
NSN 5835-01-091-2553
NSN 5855-00-185-1560
NSN 5905-00-699-9723
NSN 5990-01-433-3786
NSN 5960-01-573-6483
NSN 5965-01-418-1760