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 5835-00-933-9609
NSN 6610-00-186-9180
NSN 5930-00-137-8920
NSN 6150-00-880-3230
NSN 5950-00-698-2773
NSN 5905-00-931-2171
NSN 6135-01-440-9412
NSN 5935-00-156-1182
NSN 5925-01-521-3915
NSN 5935-01-147-3702
NSN 5895-00-981-9838
NSN 6145-00-959-5897