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 5930-01-551-6509
NSN 2925-00-265-7539
NSN 5895-00-993-1583
NSN 6110-00-836-3324
NSN 6110-01-075-3984
NSN 5965-00-061-1061
NSN 6105-00-058-0123
NSN 5935-00-099-4694
NSN 6220-00-267-6940
NSN 4140-01-123-4881
NSN 5915-01-481-3999
NSN 5950-00-503-0632