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 6135-01-599-4006
NSN 5945-00-376-4930
NSN 2925-01-090-2391
NSN 6620-01-203-7761
NSN 6240-00-452-5241
NSN 5990-01-154-7296
NSN 6240-01-413-3035
NSN 5945-00-149-0619
NSN 6610-00-703-1858
NSN 6150-01-488-2523
NSN 5895-01-531-3276
NSN 6240-01-292-5071