PTFE Envelope Gasket

Name: PTFE Envelope Gasket
Brand: SANGHVI TECHNO PRODUCTS
Price: 750 INR
Availability: InStock

750 INR/Kilograms

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Product Details:

Medium Corrosive, toxic, pure chemicals, food-grade substances
Vaccum Range -0.98 bar to 100 bar
Temperature Resistance Up to 260C continuous
Standard ASME, DIN, BS, IS, JIS, and customized
Hardness 55 to 90 Shore A (insert side)
Pressure Resistance Up to 100 bar
Gasket Coefficient 0.09 to 0.12
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PTFE Envelope Gasket Price And Quantity

Minimum Order Quantity 10 Kilograms
Price 750 INR/Kilograms

Reusability Single-use or limited reusability depending on application
pH Range 0 to 14
Manufacturing Process Molded or slit envelope with machined insert
Density 2.15 to 2.20 g/cm³
Color White (PTFE), black or metallic (insert)
Electrostatic Conductivity Non-conductive (upon request conductive grades available)
Design Type U-type, L-type, C-type, V-type envelope
Fire Resistance Self-extinguishing
Chemical Resistance Inert to almost all chemicals except molten alkali metals and elemental fluorine
Surface Finish Smooth, non-stick PTFE surface
Compression Set Low, < 15%

PTFE Envelope Gasket Product Specifications

Inner Ring Rubber, Non-metallic, SS304, SS316
Pressure Resistance Up to 100 bar
Gasket Coefficient 0.09 to 0.12
Working Temperature -200C to +260C
Material PTFE with supporting insert (Non-metallic / Metallic)
Application Chemical, pharmaceutical, food and beverage industries; suitable for use in reactors, pipelines, and vessels
Size 15 mm to 600 mm (custom sizes available)
Medium Corrosive, toxic, pure chemicals, food-grade substances
Outer Ring PTFE (Virgin/Expanded)
Vaccum Range -0.98 bar to 100 bar
Temperature Resistance Up to 260C continuous
Thickness 3 mm to 8 mm
Hardness 55 to 90 Shore A (insert side)
Standard ASME, DIN, BS, IS, JIS, and customized

Reusability Single-use or limited reusability depending on application
pH Range 0 to 14
Manufacturing Process Molded or slit envelope with machined insert
Density 2.15 to 2.20 g/cm³
Color White (PTFE), black or metallic (insert)
Electrostatic Conductivity Non-conductive (upon request conductive grades available)
Design Type U-type, L-type, C-type, V-type envelope
Fire Resistance Self-extinguishing
Chemical Resistance Inert to almost all chemicals except molten alkali metals and elemental fluorine
Surface Finish Smooth, non-stick PTFE surface
Compression Set Low, < 15%

PTFE Envelope Gasket Trade Information

Supply Ability 10 Kilograms Per Day
Delivery Time 1-2 Week
Sample Available Yes
Sample Policy Contact us for information regarding our sample policy
Main Domestic Market All India

Product Description

This PTFE Envelope Gasket is comprised of an envelope made up of polytetrafluoroethylene with a filling. It acts as a seal in the applications where high chemical as well as high pressure resistivity is needed. In addition to this, the said product is highly efficient and helps in sealing or joining. Polytetrafluoroethylene Envelope Gasket is a ring-shaped sealant which comes in white color and posses thickness up to 0.5mm 1mm. Furthermore, this sealer is compact in design and provides longer functional life, high strength, reliability and optimum performance. It is available under the brand name STP.

PTFE Envelope Gasket Advantages:

Provides resistance to water and high pressure
Can be easily installed and maintained
Sturdy construction along with light weight
Posses high strength and user-friendly operation

Polytetrafluoroethylene Envelope Gasket Technical Details:

Thickness : 0.5 mm-1 mm
Brand : STP
Material : PTFE
Color : White
Shape : Ring Gasket
Application : Sealing
Type : Envelope

Optimized Design for Demanding Environments

PTFE Envelope Gaskets offer remarkable durability in aggressive conditions, supporting temperatures from -200C to +260C and pressures up to 100 bar. Their enveloped designavailable in U-type, L-type, C-type, and V-typeadapts to various flanges and process requirements, providing powerful sealing in pipelines, reactors, and vessels.

Superior Chemical and Fire Resistance

Engineered from high-quality PTFE with rubber, non-metallic, or stainless steel inserts, these gaskets are inert to virtually all chemicals (except molten alkali metals and elemental fluorine). The non-stick PTFE surface ensures reduced contamination risk and easy removal, while self-extinguishing properties add a safety advantage.

Broad Compliance and Customization

Manufactured as per ASME, DIN, BS, IS, JIS, and tailored customer standards, PTFE Envelope Gaskets are accessible in round, oval, rectangular, or bespoke shapes. Sizes range from 15 mm to 600 mm, with custom thicknesses and materials, ensuring seamless integration across diverse operational needs.

FAQs of PTFE Envelope Gasket:

Q: How is the PTFE Envelope Gasket manufactured?

A: These gaskets are produced either by molding or by slitting a PTFE envelope, which is then fitted with a machined insert made from rubber, non-metallic, or metallic materials such as SS304 or SS316. The combination ensures both chemical resistance and mechanical strength.

Q: What applications are ideal for PTFE Envelope Gaskets?

A: They are particularly suitable for chemical, pharmaceutical, and food and beverage industries. Common uses include sealing reactors, pipelines, and vessels where corrosive, toxic, or pure chemicals and food-grade substances are handled.

Q: When should I choose PTFE Envelope Gaskets over standard gaskets?

A: Select PTFE Envelope Gaskets when you need excellent chemical resistance, broad pH compatibility (0 to 14), fire self-extinguishing capability, and when working with aggressive or high-purity media at elevated temperatures up to 260C and pressures up to 100 bar.

Q: Where can PTFE Envelope Gaskets be installed?

A: They are versatile enough for use in reactors, pipelines, and process vessels found in industrial plants worldwide, especially where strict material compatibility and hygiene are required.

Q: What benefits does a PTFE Envelope Gasket offer?

A: Benefits include outstanding chemical inertness, a non-stick surface for ease of maintenance, a wide working temperature range, compliance with international standards, and suitability for custom shapes and sizes. The gasket provides a secure, long-lasting seal and enhances process safety.

Q: How reusable are PTFE Envelope Gaskets?

A: Reusability depends on the application and operating conditions. Generally, they are designed for single use or limited reusability, especially where optimal sealing integrity is critical to process performance.

Q: What types and sizes are available for PTFE Envelope Gaskets?

A: Available in U-type, L-type, C-type, and V-type envelopes with digital or custom manufacturing. Sizes range from 15 mm to 600 mm, with custom dimensions available to fit unique requirements. Both the outer PTFE ring and inner inserts can be specified according to application needs.

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