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 5935-01-271-6590
NSN 5915-01-496-6273
NSN 5905-01-359-9039
NSN 6240-01-184-5004
NSN 5835-01-263-1293
NSN 2925-00-513-6644
NSN 5960-01-102-4277
NSN 5999-01-085-0690
NSN 5950-01-509-0296
NSN 5905-01-081-2176
NSN 6320-01-564-0893
NSN 5935-01-391-4980