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 5965-01-306-4484
NSN 5930-00-206-0210
NSN 6645-01-366-4344
NSN 5960-01-507-9112
NSN 5835-00-315-3745
NSN 6150-01-255-5507
NSN 6610-00-292-9895
NSN 5965-00-201-7479
NSN 5915-00-105-3770
NSN 6110-01-656-0417
NSN 5960-01-453-6170
NSN 6145-01-119-9040