PTFE (Teflon) Gasket
Manufacturer
At Steel Icon Stainless Pvt. Ltd., we are a specialized manufacturer of PTFE (Teflon) Gaskets, engineered to deliver exceptional chemical resistance, non-stick performance, and thermal stability in the most demanding industrial environments. Made from polytetrafluoroethylene, PTFE gaskets are ideal for applications where acids, alkalis, solvents, or reactive chemicals are present, and where hygiene or purity is critical.
Our PTFE gaskets are widely used in chemical processing, pharmaceutical, food and beverage, power generation, and electronics industries, especially where aggressive media and sterile conditions exist.
Why Choose PTFE Gaskets?
- 100% chemically inert and non-reactive to most industrial chemicals
- Temperature resistance from –200°C to +260°C
- Excellent electrical insulation and low-friction properties
- FDA, USP Class VI, and 3A certified grades available for food/pharma
- Available in pure PTFE, expanded PTFE (ePTFE), filled PTFE, and envelope gaskets
| 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; ideal for food, pharma, and corrosive chemical applications.
- Expanded PTFE (ePTFE) – Excellent conformability; seals damaged or fragile flanges.
- Glass/Bronze/Carbon-Filled PTFE Gaskets – Used in mechanical wear, thermal cycling, and conductive environments.
- PTFE Envelope Gaskets – Combines PTFE chemical resistance with inner core strength (Rubber/Metal filler).
Applications
- Chemical Processing – Pumps, valves, heat exchangers, and flanges handling aggressive fluids.
- Pharmaceutical Manufacturing – Sterile sealing in reaction vessels and mixing systems.
- Food & Beverage Industry – Bottle fillers, CIP systems, and hygienic process lines.
- Electronics Industry – For its insulation, anti-stick, and chemical resistance properties.
- Power Generation & Refineries – Used in flanged steam lines, acid recovery, and gas handling systems.
Key Benefits
- Unmatched Chemical Resistance – Resists nearly all acids, alkalis, oxidizers, solvents, and gases.
- Wide Operating Temperature – Performs from cryogenic temperatures to +260°C.
- Non-Contaminating – Non-toxic, non-leaching, and food/pharma grade safe.
- Low Friction & Non-Adhesive Surface – Prevents sticking to flanges; simplifies maintenance and removal.
- Custom Shapes & Sizes – Die-cut, laser-cut, envelope, and sheet gaskets made to spec.
Frequently Asked Questions
Explore our FAQs for insights on materials, customization, and delivery.
Can PTFE gaskets handle both acids and bases?
Yes. PTFE is one of the few materials that is inert to nearly all chemicals, including both strong acids and alkalis.
Is there a difference between virgin and filled PTFE?
Yes. Virgin PTFE is softer and purer, while filled PTFE offers better mechanical strength and wear resistance.
Can PTFE gaskets be used with steam or heat?
Yes. PTFE can handle steam up to 260°C, and filled grades can enhance thermal stability.
Do you offer food-grade certified PTFE gaskets?
Absolutely. Our virgin PTFE gaskets are FDA 21 CFR 177.1550 and USP Class VI compliant.
GET IN TOUCH
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