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 2925-01-239-6044
NSN 6150-00-350-5333
NSN 6240-01-302-4561
NSN 5895-00-805-3919
NSN 6320-01-470-6826
NSN 6685-01-354-7618
NSN 6645-01-386-6311
NSN 5985-01-294-7665
NSN 6220-00-187-8569
NSN 5950-01-616-5609
NSN 6220-01-471-2345
NSN 5895-01-188-7470