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 6135-01-439-8669
NSN 6145-00-621-0225
NSN 5965-00-296-9994
NSN 6105-01-644-6119
NSN 5930-01-091-0182
NSN 5960-00-077-1828
NSN 5905-00-038-4051
NSN 5835-01-104-5497
NSN 5999-01-442-3648
NSN 5935-01-353-7000
NSN 5960-00-289-6591
NSN 5990-01-254-3197