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 5920-00-011-7142
NSN 6145-01-440-8365
NSN 5950-00-762-7378
NSN 5998-01-432-1549
NSN 6620-01-177-5567
NSN 6610-00-890-3367
NSN 5965-00-208-4896
NSN 6220-01-334-8306
NSN 5895-01-302-5506
NSN 6320-00-456-0836
NSN 6610-00-965-8524
NSN 6240-01-372-5894