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 5975-01-584-3787
NSN 5835-00-930-8500
NSN 6610-01-132-6660
NSN 6150-01-392-0066
NSN 5965-01-502-7006
NSN 4140-00-289-9263
NSN 5998-00-610-8123
NSN 5935-01-495-1468
NSN 6105-00-664-1292
NSN 5930-01-644-5159
NSN 7035-00-997-6212
NSN 5990-01-565-2226