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 5930-01-065-5345
NSN 5965-01-381-2527
NSN 5965-01-422-1392
NSN 6240-01-321-1462
NSN 6240-00-959-6735
NSN 5960-01-006-8469
NSN 5910-01-414-8669
NSN 5960-00-338-3577
NSN 5930-01-595-6557
NSN 5925-01-175-0858
NSN 6145-00-466-4068
NSN 6240-00-244-0483