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 6145-00-286-9588
NSN 6105-00-833-8045
NSN 6320-01-616-0843
NSN 6220-01-146-8233
NSN 6320-01-554-0901
NSN 6110-01-150-7300
NSN 5950-00-596-8102
NSN 5975-00-415-2049
NSN 6135-00-235-1938
NSN 5915-01-415-3100
NSN 5975-01-535-6454
NSN 6105-01-372-9157