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 5920-01-011-6536
NSN 4140-00-354-4117
NSN 6150-01-479-6861
NSN 5855-01-501-5683
NSN 5935-01-247-1381
NSN 5930-00-855-9058
NSN 5930-00-959-9687
NSN 6240-00-978-9752
NSN 7035-00-188-6674
NSN 5960-01-163-8905
NSN 5965-01-444-3098
NSN 5855-00-869-3635