DW 251 is a premium skived PTFE (Polytetrafluoroethylene)film that conforms to the appropriate elements of the SAE AS22759A specification along with meeting the Type I, Grade I requirements of ASTM-D3308. This film is held to very close manufacturing tolerances on width and thickness.
DW 251 has been developed for specific use in aerospace and aircraft electrical and wiring applications. DeWAL manufactures this product to meet the specific requirements of customer specifications and designates specific PTFE resins that meet those customer specifications. DeWAL uses an identifiable numbering system to ensure that each customer is receiving the material which has been approved and which is required to meet the individual customer specifications.