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 6220-01-417-2675
NSN 7035-00-445-9657
NSN 4140-01-411-5908
NSN 5985-00-137-0488
NSN 6240-01-291-4833
NSN 6620-01-205-4815
NSN 6620-01-538-0061
NSN 6620-00-643-1402
NSN 6610-01-431-8575
NSN 5945-01-328-8526
NSN 5960-01-598-7371
NSN 6135-00-321-6707