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 6150-00-802-1454
NSN 6110-00-969-4030
NSN 5945-01-617-0405
NSN 5996-01-227-2555
NSN 5965-01-202-1007
NSN 5910-01-127-9205
NSN 5915-01-422-8722
NSN 5835-01-528-7454
NSN 5990-01-540-1619
NSN 6610-01-304-3226
NSN 5975-00-102-9947
NSN 6320-01-457-2805