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 6150-01-312-6949
NSN 5925-01-415-0261
NSN 6220-01-224-0224
NSN 6620-01-260-9142
NSN 5950-00-197-7705
NSN 5835-01-558-9444
NSN 5925-00-337-8138
NSN 6135-01-660-2840
NSN 6135-01-447-5083
NSN 5855-00-631-4565
NSN 6220-00-300-7028
NSN 5855-01-633-7247