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 5935-01-423-7014
NSN 5915-01-408-2936
NSN 2925-00-511-0325
NSN 5915-00-137-6608
NSN 6650-01-523-3600
NSN 5985-01-103-6947
NSN 6620-01-352-5640
NSN 4140-01-383-0239
NSN 5945-01-315-3818
NSN 7035-01-053-0535
NSN 5960-00-315-0358
NSN 5920-01-324-1571