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 5930-01-210-9956
NSN 5945-00-046-4593
NSN 5855-01-516-5211
NSN 5835-01-192-4165
NSN 5935-00-362-3873
NSN 5835-00-954-2833
NSN 5910-00-318-3032
NSN 5990-01-489-0366
NSN 5998-00-110-3730
NSN 6110-00-431-0402
NSN 6240-01-433-8639
NSN 5990-01-529-8433