Expanded PTFE Gaskets Manufacturer in Hyderabad

Expanded Ptfe Gasket Sheets and Cut Gaskets Style 2800

Product Overview:

Expanded PTFE (ePTFE) is a high-performance sealing material derived from polytetrafluoroethylene (PTFE), engineered into a microporous structure through a special stretching process. It is widely used in sealing applications where chemical resistance, temperature tolerance, and long service life are critical.

Description:

Expanded PTFE gasket sheets offer excellent compressibility and are chemically inert, making them ideal for use in applications with irregular surfaces or low bolt load.

Technical Specifications:

• Material: Expanded PTFE
• Temperature Range: -200°C to 260°C
• Pressure Resistance: Up to 20 MPa
• pH Range: 0 – 14

Availability: In Stock

Categories: Gaskets, Non Asbestos Jointing sheet & Cut Gaskets

Description
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Applications of Expanded PTFE Gaskets:

Suitable for food processing, chemical processing, and pharmaceutical industries.

Key Benefits:

• High compressibility

• Chemically inert

• Suitable for low bolt load applications

Applications of Expanded PTFE:
1. Flange Gaskets (Cut Gaskets):

Used in pipe flanges in chemical processing, food and beverage, and pharmaceutical industries.

2. Lined and Glass-lined Equipment:

Ideal for sealing fragile surfaces like glass or ceramic-lined flanges due to its softness and conformability.

3. Manways, Heat Exchangers, Pumps, Valves:

Suitable for sealing irregular, warped, or damaged flange faces.

4. Aggressive Chemical Services:

Excellent chemical resistance makes it suitable for use in corrosive environments (acid, alkali, solvents).

5. Oxygen and Chlorine Services:

Clean and inert properties make it suitable for highly reactive or hazardous media.

6. Food and Pharma Applications:

Non-toxic, FDA-compliant versions of ePTFE are used in sensitive process industries.

Relevant Standards for Expanded PTFE Gaskets :

1. Material & Performance Standards:

ASTM F104: Standard classification for non-metallic gasket materials
ASTM F36: Compressibility and recovery.
ASTM F38: Creep relaxation.
ASTM F37: Fluid leakage.
ASTM D4894 / D4895: PTFE material specifications.

2.Application Standards:

ASME B16.21: For non-metallic flat gaskets.
EN 13555: Gasket characterization parameters for flange design.
TA-Luft / VDI 2440: Emissions compliance, particularly in Europe.
FDA 21 CFR 177.1550: For food-grade ePTFE.
USP Class VI: For pharmaceutical applications.

3. Fire Safety:

API 607 / ISO 10497: (If applicable in fire-safe systems, although ePTFE itself is not fire-rated unless combined in composites.)

Feature	ePTFE	Conventional PTFE	Compressed Fiber	Rubber Gaskets
Sealing on irregular surfaces	Excellent	Poor	Moderate	Poor
Chemical resistance	Excellent	Excellent	Moderate	Poor
Temperature range	-268°C to +260°C	Similar	Lower	Lower
Creep & cold flow	Low	High	Low	Moderate
Reusability	Possible (in some cases)	Poor	Poor	Poor
Conformability	High	Low	Moderate	High
Installation	Easy, no torque retightening	Needs care	Requires torque	Easy
FDA/Pharma compliant	Yes (grades available)	Yes	No	No