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 6320-01-448-6265
NSN 6620-01-029-3705
NSN 6105-00-016-9473
NSN 6240-00-204-9355
NSN 6105-01-052-8975
NSN 6150-01-266-6111
NSN 6610-01-217-4162
NSN 7035-00-517-8232
NSN 5855-01-507-7394
NSN 4140-00-009-3586
NSN 5996-00-248-7061
NSN 5910-01-570-7343