PSR133 phenolic resin in certified to MIL-R-9299 C, grade B - Improved Mechanical Properties. PSR133 is unaffected by Hydraulic Oil, Isopropanol, Ethylene Glycol & Hydraulic Fluid in 24 hour soak testing per Federal Test Standard 406 - method 7011. PSR133 is suitable for all military specifications requiring MIL-R-9299 resin. This material meets the requirement of MIL-L-64151 (HJ1) forarmor. PSR133 offers the highest char yield for phenolic available today for carbon/carbon and ablative applications. Available in prepreg form as well as neat resin, PSR133 is the most cost effective phenolic for use in carbon/carbon systems. PSR133G is graphitic carbon filled prepreg for carbon/ carbon and ceramic applications.