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 5835-00-148-9719
NSN 5945-00-296-8464
NSN 6620-01-386-5914
NSN 5990-01-432-0523
NSN 4140-01-088-1898
NSN 5895-00-233-7309
NSN 5965-01-459-2273
NSN 6320-01-139-0533
NSN 5920-00-185-9587
NSN 6240-00-309-7767
NSN 5950-01-088-8083
NSN 6145-01-266-8415