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 6150-00-213-8189
NSN 6610-00-432-7162
NSN 5960-01-285-8484
NSN 5950-00-352-7261
NSN 7035-00-206-6123
NSN 7035-00-007-5188
NSN 6240-00-299-8474
NSN 5930-01-113-7828
NSN 6610-01-114-2013
NSN 5855-00-189-6066
NSN 5895-00-539-8322
NSN 5990-01-522-6096