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 5920-01-573-5769
NSN 6135-01-621-0742
NSN 5998-01-098-5056
NSN 6620-00-299-2530
NSN 5930-01-172-2779
NSN 5930-01-146-4489
NSN 6145-01-592-1351
NSN 5910-01-066-1507
NSN 5990-01-262-7981
NSN 5960-01-163-2266
NSN 6150-01-420-2578
NSN 5920-01-100-3018