DEi Ultra Sheath MA Heat Sleeve, designed to offer the ultimate in heat shielding for wiring, cables and hoses. Ultra Sheath MA has a higher sustained heat capability of up to 1100°F and is more flexible than standard foil or bonded aluminium products. DEi Ultra 47 is constructed from a specialised process that impregnates molten aluminium, into the core fabric, giving it higher heat reflective properties. It's the perfect choice for high heat applications in tight engine bays and situations. Easily cut to length as required.