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 6320-00-032-4853
NSN 6645-00-160-0503
NSN 4140-00-798-9144
NSN 5895-00-174-4442
NSN 5960-01-354-0762
NSN 5915-01-458-1753
NSN 6130-01-336-3078
NSN 5975-01-056-4297
NSN 5985-01-081-2617
NSN 2925-01-136-2551
NSN 5990-01-621-6969
NSN 6110-01-129-6924