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 6135-00-321-6707
NSN 6135-01-519-7879
NSN 2925-00-682-5028
NSN 5905-01-052-3277
NSN 6135-00-182-7008
NSN 6220-00-930-8338
NSN 6110-00-827-1653
NSN 6130-01-141-5165
NSN 5950-00-843-9461
NSN 6150-00-239-6619
NSN 5985-01-453-8092
NSN 5996-01-227-2555