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 5975-00-596-4716
NSN 6645-00-363-9775
NSN 5998-00-135-7001
NSN 5895-01-323-6413
NSN 5998-00-156-8572
NSN 5945-01-598-1225
NSN 5960-01-437-5318
NSN 6320-01-160-7757
NSN 5965-01-322-8136
NSN 5950-00-114-8862
NSN 5998-01-351-5268
NSN 6145-01-526-0668