Lining Materials

Polytetrafluoroethylene (PTFE)

Key Features

• Excellent chemical resistance to almost all corrosive media
• Wide operating temperature range (from -190°C to +260°C)
• Very low coefficient of friction, non-stick surface
• Excellent electrical insulation properties
• FDA compliant grades available for food applications

Chemical Resistance Data

PTFE offers the most comprehensive chemical resistance of all the other polymer lining materials. It resists almost all known chemicals up to 260°C.

• Resistant to most acids, alkalis, alcohols, ketones, esters, and hydrocarbons.
• Unaffected by UV light and outdoor weathering.
• Non-toxic and biocompatible.
• Excellent resistance to cracking, stress corrosion, and creep.

Perfluoroalkoxy alkanes (PFA)

Key Features

• Excellent chemical resistance, similar to PTFE
• Continuous service temperature up to 250°C
• Superior stress crack resistance compared to FEP
• High transparency and good optical clarity
• Suitable for high purity and semiconductor applications

Chemical Resistance Data

PFA offers the most comprehensive chemical resistance of all the other polymer lining materials. It resists almost all known chemicals up to 260°C.

• Resistant to most acids, alkalis, alcohols, ketones, esters, and hydrocarbons.
• Unaffected by UV light and outdoor weathering.
• Non-toxic and biocompatible.
• Excellent resistance to cracking, stress corrosion, and creep.

Fluorinated ethylene propylene (FEP)

Key Features

• Similar chemical resistance to PTFE
• Lower continuous service temperature (up to 200°C) than PFA
• Excellent clarity and transparency
• Good for lining complex shapes and smaller diameters

Chemical Resistance Data

FEP offers excellent chemical resistance and is suitable for a wide range of corrosive fluids. It is often used in applications where high purity and clear vision are required.

• Resistant to most acids, alkalis, alcohols, ketones, esters, and hydrocarbons.
• Unaffected by UV light and outdoor weathering.
• Non-toxic and biocompatible.
• Good resistance to many aggressive chemicals and solvents.

Polyvinylidene fluoride (PVDF)

Key Features

• Good chemical resistance to many acids and alkalis
• High abrasion resistance and mechanical strength
• Continuous service temperature up to 150°C
• Excellent resistance to UV radiation and weathering
• Suitable for abrasive slurries and high-pressure applications

Chemical Resistance Data

PVDF provides a good balance of chemical resistance and mechanical properties. It is often used where both chemical and abrasion resistance are needed.

• Resistant to most acids, alkalis, and many organic solvents.
• Resistant to chlorine and bromine.
• Suitable for many hydrocarbons and corrosive chemicals.
• Compatibility with most common industrial solvents.

Polypropylene (PP)

Key Features

• Cost-effective and widely used thermoplastic
• Good chemical resistance to many acids, alkalis, and organic solvents
• Typical service temperature range from 0°C to 100°C
• Lightweight and good mechanical properties
• Can be highly customized for various applications

Chemical Resistance Data

Polypropylene is a versatile and cost-effective polymer with good chemical resistance to a broad range of chemicals, making it suitable for many industrial applications.

• Resistant to most acids, alkalis, and organic solvents.
• NOT SUITABLE FOR OXIDIZING ACIDS AND SOME AROMATIC HYDROCARBONS.
• Limited resistance to strong oxidizing agents and chlorinated solvents.
• Excellent resistance to stress cracking and fatigue.