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 6110-01-273-0223
NSN 6150-01-639-8152
NSN 5910-00-007-5236
NSN 5895-00-636-4842
NSN 6320-00-070-4544
NSN 6620-01-270-6619
NSN 2925-01-181-3972
NSN 5855-01-479-3152
NSN 5910-00-109-4852
NSN 6145-00-497-1578
NSN 5990-01-573-1634
NSN 6220-00-613-6474