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 5915-00-114-2661
NSN 6320-00-937-5625
NSN 5905-01-127-6615
NSN 5930-00-196-7311
NSN 5925-00-476-8740
NSN 6105-01-400-4194
NSN 6150-01-303-1353
NSN 6135-00-947-0406
NSN 5920-01-296-8691
NSN 6240-00-423-9575
NSN 5835-00-483-3364
NSN 5855-01-114-3513