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 5960-01-599-9821
NSN 6620-01-116-2632
NSN 5935-01-385-3578
NSN 5935-00-075-9016
NSN 5915-01-057-4505
NSN 5975-01-473-4503
NSN 6685-00-889-1579
NSN 5855-01-103-8650
NSN 6130-00-202-4688
NSN 6150-00-719-6119
NSN 5950-01-444-1789
NSN 5998-01-512-8563