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 6145-01-025-1822
NSN 5965-01-361-9760
NSN 6240-01-335-7725
NSN 6620-01-270-0710
NSN 5965-01-406-3156
NSN 5905-01-211-4079
NSN 6650-00-992-4540
NSN 5835-00-516-8675
NSN 5935-01-651-1715
NSN 5935-00-622-5824
NSN 6130-00-538-9798
NSN 5855-00-937-7709