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 7035-01-292-2580
NSN 5905-00-400-2769
NSN 6110-00-372-4780
NSN 5960-00-761-5762
NSN 5998-00-244-8629
NSN 6645-00-802-7991
NSN 6240-01-519-2935
NSN 5945-01-352-4603
NSN 5996-00-764-1610
NSN 5835-01-256-7323
NSN 6240-01-577-3501
NSN 6645-00-814-4558