PTFE (Teflon) Gasket
Manufacturer
At Steel Icon Stainless Pvt. Ltd., we specialize in manufacturing PTFE (Teflon) gaskets, designed to provide outstanding chemical resistance, non-stick performance, and thermal stability in demanding industrial environments. Made from polytetrafluoroethylene, PTFE gaskets are perfect for applications exposed to acids, alkalis, solvents, or reactive chemicals, as well as situations where hygiene and purity are paramount.
Our PTFE gaskets are widely used in industries such as chemical processing, pharmaceuticals, food and beverage, power generation, and electronics, especially in environments with aggressive media and sterile conditions.
Why Choose PTFE Gaskets?
100% Chemically Inert: Non-reactive to most industrial chemicals, ensuring safe use in highly corrosive environments.
Temperature Resistance: Withstands temperatures ranging from –200°C to +260°C, making it ideal for both cryogenic and high-temperature applications.
Excellent Electrical Insulation: Offers superior electrical insulation and low-friction properties, making it useful in electrical and mechanical applications.
FDA, USP Class VI, and 3A Certified: Available in grades that meet stringent standards for food and pharmaceutical industries, ensuring compliance with hygiene and purity requirements.
Versatile Options: Offered in pure PTFE, expanded PTFE (ePTFE), filled PTFE, and envelope gaskets to meet various sealing needs.
| Products |
|---|
|
Stainless Steel Bar |
|
Fasteners |
|
Forged Products |
|
Flanges |
|
Forged Fittings |
|
Stainless Steel Billets |
|
Round Corner Square Billets |
|
Stainless Steel Pipes |
|
Pipe Fittings |
|
Valve |
Specification Chart
| Property | Specification |
|---|---|
|
Thickness Range |
0.5mm to 6mm |
|
Temperature Range |
–200°C to +260°C |
|
Pressure Range |
Up to 100 bar (depending on style) |
|
Available Forms |
Sheets, cut gaskets, spiral-wound filler, envelope type |
|
Standards |
ASTM D3294, ASME B16.21, FDA 21 CFR 177.1550 |
|
Styles Available |
Flat ring, full-face, envelope, and jacketed |
Chemical Composition
| Material | Formula | Key Traits |
|---|---|---|
|
PTFE (Virgin) |
(C₂F₄)n |
Chemically inert, non-stick, non-toxic |
|
ePTFE |
Expanded PTFE |
Soft, conformable, suitable for fragile flanges |
|
Filled PTFE |
Glass, Carbon, Bronze |
Enhanced strength, wear, conductivity |
Mechanical Properties
| Property | Virgin PTFE | Expanded PTFE (ePTFE) | Filled PTFE |
|---|---|---|---|
|
Tensile Strength (MPa)
|
20–30 |
10–20 |
25–40 |
|
Elongation (%) |
≥ 150 |
≥ 300 |
≥ 100 |
|
Hardness (Shore D) |
50–65 |
35–50 |
60–75 |
|
Compression Set (%) |
≤ 15 |
≤ 10 |
≤ 20 |
|
Dielectric Strength |
Very High |
Moderate |
Moderate |
Types of PTFE Gaskets Offered
Virgin PTFE Gaskets – FDA compliant and ideal for applications in food, pharmaceutical, and corrosive chemical environments, offering high purity and chemical resistance.
Expanded PTFE (ePTFE) – Provides excellent conformability, making it perfect for sealing damaged or fragile flanges and offering a reliable, leak-proof seal in challenging conditions.
Glass/Bronze/Carbon-Filled PTFE Gaskets – Designed for applications involving mechanical wear, thermal cycling, and conductive environments, these filled gaskets enhance performance under extreme conditions.
PTFE Envelope Gaskets – Combine the chemical resistance of PTFE with the strength of an inner core (rubber or metal filler), providing superior sealing performance in demanding applications.
Applications
Chemical Processing – Used in pumps, valves, heat exchangers, and flanges handling aggressive chemicals, ensuring secure, leak-proof seals in highly corrosive environments.
Pharmaceutical Manufacturing – Provides sterile sealing in reaction vessels and mixing systems, meeting stringent hygiene and purity standards.
Food & Beverage Industry – Ideal for bottle fillers, CIP (Clean-in-Place) systems, and hygienic process lines, ensuring safe and sanitary conditions for food processing.
Electronics Industry – Utilized for its insulation, anti-stick, and chemical resistance properties, making it ideal for sealing and protecting electronic components.
Power Generation & Refineries – Used in flanged steam lines, acid recovery systems, and gas handling, offering reliable seals in high-temperature and corrosive environments.
Key Benefits
Unmatched Chemical Resistance – Resists nearly all acids, alkalis, oxidizers, solvents, and gases, ensuring reliable performance in aggressive environments.
Wide Operating Temperature – Functions effectively from cryogenic temperatures up to +260°C, making it suitable for extreme thermal conditions.
Non-Contaminating – Non-toxic, non-leaching, and safe for food and pharmaceutical applications, ensuring compliance with hygiene standards.
Low Friction & Non-Adhesive Surface – Prevents sticking to flanges, simplifying maintenance, removal, and reassembly.
Custom Shapes & Sizes – Available in die-cut, laser-cut, envelope, and sheet gaskets, all made to your specific requirements.
Frequently Asked Questions
Yes, PTFE gaskets offer excellent resistance to both acids and bases, making them ideal for applications involving aggressive chemicals in a wide range of environments.
Yes, virgin PTFE is pure, offering superior chemical resistance and non-stick properties, while filled PTFE contains additives (e.g., glass, carbon) to enhance properties like wear resistance, strength, and conductivity.
Yes, PTFE gaskets can withstand high temperatures and are commonly used in steam applications, with temperature resistance up to +260°C, making them suitable for heat-sensitive environments.
Yes, we offer food-grade certified PTFE gaskets, which meet FDA, USP Class VI, and other standards for use in food, beverage, and pharmaceutical industries, ensuring safety and hygiene.
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