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 5910-00-481-7309
NSN 5925-01-308-5064
NSN 5965-00-454-3444
NSN 5996-00-553-7348
NSN 5985-01-218-6150
NSN 5915-01-595-1833
NSN 5999-01-130-8571
NSN 5895-01-538-1703
NSN 5985-01-103-2715
NSN 4140-01-579-2773
NSN 5945-01-393-2568
NSN 6610-01-576-7079