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 5935-01-346-2128
NSN 6650-00-170-5095
NSN 5930-00-876-9325
NSN 6240-01-440-9778
NSN 6240-00-256-6410
NSN 5965-01-295-1125
NSN 5915-01-019-8562
NSN 2925-00-144-6405
NSN 5925-00-902-0613
NSN 6130-00-787-3024
NSN 6110-01-107-7503
NSN 5925-00-513-7610