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 4140-01-232-3220
NSN 5910-01-628-0807
NSN 6145-00-629-2801
NSN 6610-00-817-8772
NSN 5960-01-447-7074
NSN 5910-01-209-2430
NSN 5905-01-065-7964
NSN 5930-01-124-0562
NSN 5999-01-429-7757
NSN 6620-01-052-2773
NSN 5835-00-010-4307
NSN 5960-01-425-1454