Enveloped PTFE Sealing Gasket Material
Product Details
Enveloped PTFE Sealing Gasket Material consists of a PTFE outer jacket combined with an elastic or rigid filler core. The PTFE layer acts as the primary sealing surface, offering outstanding resistance against acids, solvents, chemicals, and moisture.
Compared with solid PTFE gaskets, PTFE envelope gaskets provide improved compressibility and recovery, allowing them to maintain sealing performance under fluctuating pressure and temperature conditions.
The smooth and non-stick PTFE surface prevents media contamination and reduces friction during installation and removal. This makes them especially suitable for applications requiring cleanliness, chemical resistance, and long service life.
Our PTFE gasket materials can be manufactured according to customer drawings, equipment specifications, and application requirements.
Material Structure
Outer Layer: Virgin PTFE envelope
Inner Core: Rubber, Non-Asbestos, Compressed Fiber, or Metal (optional)
Non-stick, non-aging PTFE surface
Custom envelope styles available
Key Performance
Excellent chemical and corrosion resistance
Wide temperature range: –200°C to +260°C
Low friction and anti-stick surface
Good compression recovery and sealing stability
Prevents flange corrosion and media contamination
Long service life under harsh conditions
Specifications
Gasket Type: Full-face / Ring type / Custom design
Size: According to ASME, DIN, JIS standards or customized
Thickness: 1.5 mm / 2.0 mm / Customized
Envelope Type: Slit / Folded / One-piece envelope
Color: White (standard)
Manufacturing Process: Molded / CNC cut
Custom sizes, drawings, and samples are supported.
Applications
This enveloped PTFE sealing material is widely used in:
Chemical processing equipment
Pumps and valves
Heat exchangers
Pipelines and flange connections
Pharmaceutical and food processing systems
Application Scenarios & Function
The enveloped PTFE gasket is installed between flanges to:
Provide leak-proof sealing
Protect metal flanges from corrosive media
Prevent product contamination
Maintain system pressure stability
It is especially suitable for corrosive fluids, strong acids, alkalis, solvents, and high-purity applications.
Advantages of Our Enveloped PTFE Gasket Material
Factory direct manufacturing
Stable quality & strict inspection
Custom material structure available
OEM & ODM service supported
Competitive pricing & fast delivery
FAQS
1. What is an Enveloped PTFE gasket?
An Enveloped PTFE gasket is a sealing product consisting of a PTFE outer layer combined with a filler core. The PTFE layer provides chemical resistance, while the core improves elasticity and sealing performance.
2. What industries use PTFE envelope gaskets?
PTFE envelope gaskets are commonly used in chemical processing, pharmaceutical, food processing, semiconductor, petrochemical, and industrial equipment applications.
3. What chemicals can PTFE gasket material resist?
PTFE provides excellent resistance to most acids, alkalis, solvents, fuels, and corrosive chemicals. It is one of the most chemically stable sealing materials available.
4. Can you manufacture customized PTFE gaskets?
Yes. We can produce customized PTFE envelope gasket materials according to customer drawings, dimensions, application requirements, and equipment specifications.
5. How do I choose the right PTFE gasket material for my application?
Selection depends on several factors:
Sealing media
Operating temperature
Working pressure
Flange design
Required size
Chemical compatibility
Providing these details will help us recommend the most suitable PTFE gasket solution.
Company Profile
ZETAI was founded in 2014,It was a high-tech enterprise in China's fluoroplastics industry and a professional supplier of industrial and medical-grade fluoropolymer tubing, providing one-stop solutions for the global market.
With professional technology and excellent product quality, the company's products can be widely used in electrical insulation, electronic communications, power engineering, aerospace, medical, automotive, mechanical and other industry fields, and sell well in domestic and foreign markets. By the majority of users of the unanimous praise.
