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 6320-01-606-2508
NSN 5945-01-441-8331
NSN 5996-00-753-1599
NSN 5990-01-195-9400
NSN 6130-01-310-2248
NSN 6105-01-006-7069
NSN 6620-01-415-5803
NSN 5930-01-361-8856
NSN 5855-01-258-6180
NSN 5990-00-984-2200
NSN 5930-00-100-3210
NSN 6240-00-740-8901