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 6240-00-233-3481
NSN 5950-01-210-3163
NSN 6145-00-107-3283
NSN 6645-00-960-6594
NSN 5925-01-359-1972
NSN 5996-00-224-6192
NSN 5925-01-529-0497
NSN 5925-00-950-7444
NSN 6220-01-084-0287
NSN 5945-01-633-1886
NSN 6610-01-336-8027
NSN 5855-01-020-7982