ansi flange gasket

add to cart ANSI Flange Gasket is a non-metallic insulating gasket specifically designed for highly corrosive environments and complies with the ASME B16.21 standard. Utilizing an advanced material combination of PTFE bonded to EPDM, it ensures exceptional chemical stability and durability. With a size of 2 inches and a pressure rating of 150LB, the ANSI Flange Gasket is suitable for a wide range of industrial applications, particularly in scenarios requiring high corrosion resistance. Whether in chemical, oil, or other demanding environments, the ANSI Flange Gasket delivers reliable sealing performance, ensuring the safety and efficiency of your systems. Choose the ANSI Flange Gasket to provide optimal protection and performance for your equipment. Superior Chemical Resistance The chemical resistance of the ANSI Flange Gasket is one of its most prominent advantages, primarily due to the excellent properties of its core materials—polytetrafluoroethylene (PTFE) and ethylene propylene diene monomer (EPDM). Chemical Resistance of PTFE PTFE is a fully fluorinated polymer with extremely high chemical inertness, capable of resisting corrosion from almost all strong acids, bases, organic solvents, and oxidizing agents. Below are the resistance data of PTFE in the ANSI Flange Gasket against common chemical substances: Chemical Substance Concentration Range Resistance Evaluation Remarks Sulfuric Acid (H₂SO₄) 0-98% Fully Resistant In 98% sulfuric acid, the PTFE layer shows no mass loss or physical property changes Hydrochloric Acid (HCl) 0-37% Fully Resistant In 37% hydrochloric acid, the PTFE layer exhibits no swelling or corrosion Nitric Acid (HNO₃) 0-68% Fully Resistant In 68% nitric acid, the PTFE layer remains stable with no chemical reactions Sodium Hydroxide (NaOH) 0-50% Fully Resistant In 50% sodium hydroxide solution, the PTFE layer shows no degradation or deformation Acetone (C₃H₆O) 100% Fully Resistant In pure acetone, the PTFE layer does not swell or dissolve Benzene (C₆H₆) 100% Fully Resistant In pure benzene, the PTFE layer remains stable with no chemical reactions Chemical Resistance of EPDM EPDM is a synthetic rubber with excellent ozone resistance, aging resistance, and weather resistance, while also demonstrating good tolerance to a variety of chemicals. Below are the resistance data of EPDM in the ANSI Flange Gasket against common chemical substances: Chemical Substance Concentration Range Resistance Evaluation Remarks Sodium Hydroxide (NaOH) 0-30% Good Resistance In 30% sodium hydroxide solution, the EPDM layer shows a tensile strength loss of Sulfuric Acid (H₂SO₄) 0-50% Good Resistance In 50% sulfuric acid, the EPDM layer exhibits a volume change rate of Hydrochloric Acid (HCl) 0-20% Good Resistance In 20% hydrochloric acid, the EPDM layer shows a hardness change of Acetone (C₃H₆O) 100% Limited Resistance In pure acetone, the EPDM layer of the ANSI Flange Gasket exhibits a swelling rate of Benzene (C₆H₆) 100% Limited Resistance In pure benzene, the EPDM layer of the ANSI Flange Gasket exhibits a swelling rate of Composite Advantages of PTFE Bonded to EPDM The ANSI Flange Gasket combines PTFE and EPDM to leverage the strengths of both materials while compensating for their individual limitations: PTFE Layer: As the primary barrier in contact with the medium, the PTFE layer of the ANSI Flange Gasket provides complete resistance to almost all chemical substances. EPDM Layer: The EPDM layer of the ANSI Flange Gasket offers elasticity and mechanical strength while enhancing the gasket's ozone resistance, aging resistance, and weather resistance. With its superior chemical resistance, the ANSI Flange Gasket can operate stably in extreme chemical environments, providing long-term reliable sealing performance. Whether against strong acids, bases, or organic solvents, the ANSI Flange Gasket demonstrates excellent tolerance, ensuring equipment safety and reducing maintenance costs.