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 7035-01-600-6731
NSN 6320-00-931-4855
NSN 5950-00-496-9985
NSN 5990-00-419-0236
NSN 5930-01-070-5636
NSN 5855-01-501-5683
NSN 5965-00-722-7574
NSN 5996-01-343-2962
NSN 5975-00-285-8003
NSN 5950-01-432-0877
NSN 6240-01-633-9357
NSN 5950-00-351-9481