Temperature and Pressure Resistant Flange Gasket Aramid Fiber Asbestos Free Rubber Sheet. Temperature Resistance: Operates effectively within a wide range of -50 to 250 degrees Celsius. Chemical Resistance: Resistant to oil, water, and general acid and alkali environments. Asbestos Free Material: Made from non-metallic, non-asbestos fiber rubber sheet for safety. Customizable Spring Washer: Spring washer type is fully customizable to meet specific needs. High Mechanical Strength: Tensile strength is at least 7.0 Mpa according to ASTM F-152. Excellent Sealing Performance: Sealing rate is less than or equal to 1.0 ml/min under standard tests. Flexible and Durable: Remains crack-free when bent on a round bar 12 times the thickness. ISO 9001 Certified: Manufacturing process adheres to ISO 9001 quality management standards.