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 4140-01-655-3052
NSN 5910-01-236-6733
NSN 5895-01-314-4127
NSN 5915-00-777-1032
NSN 5925-01-395-9587
NSN 5835-00-880-6477
NSN 5965-01-353-0085
NSN 5985-00-011-7532
NSN 5985-01-038-4602
NSN 5895-01-458-2981
NSN 5920-00-815-5599
NSN 5990-00-975-3276