Composition cork and fiber glue-glycerin impregnate gasket material. Special base fiber containing 40% granulated cork particles by volume. Saturated with a glue-glycerin-formaldehyde impregnate which makes the sheet impervious to oil, water and gasoline. The incorporation of the cork with the fiber makes a soft compressible material adaptable for gasket application with low internal pressures. Flexibility: capable of withstanding bending around a rod with a diameter of twice the thickness of the material under test, without cracking, breaking or excessive marring of the surfaces. APG Fibrecork Sheet, Series: Style 0777, 1/16 in Thickness, 36 in Length, 250 °F Temper, 1000 psi Tensile Strength