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 6610-01-451-4801
NSN 5990-00-582-0342
NSN 5915-01-146-8951
NSN 6110-01-222-3471
NSN 6150-00-274-5571
NSN 5960-00-264-5233
NSN 5990-00-538-4279
NSN 6645-01-418-7508
NSN 7035-01-323-0164
NSN 5960-01-449-1310
NSN 5950-01-451-7682
NSN 6645-01-473-9179