Thermal & Fuel Resistance Redefined – Why Engineers Choose IOTA FHTV 3401H
In high-stakes environments where conventional elastomers soften, swell, or crack, the IOTA FHTV 3401H Series stands apart as a high-intensity fluorosilicone compound formulated for longevity. Its unique polymer matrix is reinforced with selected fillers and additives, resulting in a dense, uniform material that resists degradation from both heat and chemical exposure. With densities of 1.46 and 1.48 g/cm³, these grades offer a robust yet lightweight solution for precision-molded parts.
Performance data confirms why this series is trusted by design engineers worldwide. Tensile strength reaches 11.5 MPa, while elongation at break exceeds 350 %, providing excellent stretch and recovery for dynamic movements. Tear resistance is consistently high at 29–30 kN/m, minimising the risk of crack propagation during installation or operation. The low compression set values (10–11 %) are particularly critical for O-rings and gaskets, where long-term sealing efficiency is non-negotiable.
Under sustained heat exposure (225 °C for 72 hours), the material maintains its physical integrity with minimal drift – hardness increases by only 2 points, tensile drops by less than 24 %, and elongation reduces by less than 19 %. In Fuel C immersion tests, volume swell is controlled to around 20 %, ensuring dimensional stability in fuel-handling components. To achieve these results, we recommend adding 0.7 parts of bis(tert-butylperoxy)diisopropylbenzene equivalent peroxide, followed by a two-stage cure: 15 minutes at 170 °C, then 4 hours at 200 °C. With proper storage in its original 20 kg packaging, the product remains fully effective for 12 months. Upgrade your sealing and hose applications with a material that truly withstands the harshest service conditions.