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 5945-00-447-1934
NSN 5998-00-506-4022
NSN 6610-01-141-9979
NSN 5895-01-281-1659
NSN 6620-01-033-7566
NSN 5835-00-357-9544
NSN 5925-01-435-0187
NSN 5935-01-502-8711
NSN 5990-00-003-4464
NSN 5915-01-483-6709
NSN 5930-01-063-3197
NSN 6650-01-569-0004