Yuyao Tenglong Sealing & Packing Factory
 Rubber & Plastics > Plastic Products >  PTFE Envelope Gasket

PTFE Envelope Gasket

Brand Name:
Model Number:
Flat Gasket
Standard or Nonstandard:
PTFE Envelope Gasket
Detailed Description

Three designs for chemically aggressive media
Non asbestos gaskets coated in a thin PTFE cover.
Custom-made to suit your size



A resilient and non asbestos fiber material encased in a thin cover of PTFE. The resulting gasket combines the inertness of virgin PTFE with the mechanical properties of the compressed fiber sheet.

Covers: virgin PTFE. 
Inserts: non-asbestos gasket

We supplies three envelope designs:
• V Type,
• L Tpye, 
• U Type.

V Type

  • Standard design: most economical envelope gasket.
  • Suits majority of applications where highly abrasive madia are not used and turbulent flow will not create problems. 
  • Needs clearance between insert and envelope inside diameter to enable insert to be fitted.

U and L Type

  • Provides continuity with pipeline bore for smooth flow.
  • Recommended where flange sealing width is restricted or thick inserts are used.
  • Supplied with serrated surface.

 PTFE Envelope Gasket

Typical Applications
Flanged joints handling highly aggressive fluid media that would otherwise swiftly destroy the integrity of other materials. Often used with soft insert material on glass-lined pipe work systems. Also used in food processing, where cleanliness and non-contamination are essential.

Service capability
Temperature: -80 °C  to +260°C

We supply many sizes envelope seal for TANK CONTAINER

We can produce according customers requested.



Tenglong Sealing & Packing Factory always abides by the business strategy of “high-quality products & reasonable price”, the service concept of “showing respect to you & trying my best”, and the professional spirit of “honesty, innovation, enthusiasm, sureness” to provide customers the best products and services


Sales points or Focus  :

Quality assurance both for our products and service for after-sales

Favorable price

Great variety of products

More then 30 years of experience on production

More then 10 years of experience on export business

OEM and ODM service provided


Certificated Approval :ISO9001: 2008  

 PTFE Envelope Gasket


QC Team :

A QC team with more than 30 professional and technical personnel.

To ensure 100% products checking.

Quality guarantee:

We provide 1 years warranty of product.

We don’t short of net. Weight or length

We guarantee our mass products quality full same as the confirmed samples.


We will reply your email or fax within 24 hours

You can call us at any time if there is any question on our production.


Shipping Info.:

We can accept appointed shipping company or booking ship for client. Tracking the containers until client receive the goods.


If you want to know more information, pls contact us without any hesitate.

We have a very strict quality controling system which promise that ISO Tank Container Spare Parts we produce are always of best quality!We are specializing in producing many kinds of products,welcome to contact me for the details!We promise our customers best price!Above items are just a part, many more Cisco products are not listed out, please feel free contact us for more details. Thank you for your attention

Company information:
    Yuyao Tenglong Sealing & Packing Factory established sine 1979 . We is an exporter of China (Mainland) Other Plastic Products products.    We have exported products to many other countries, such as North America South America Eastern Europe Southeast Asia Africa Oceania Mid East Eastern Asia Western Europe. We are especially strict with quality and after-sales service, take Win-Win policy as our highest target, and do our up most to provide products with best.    We take this opportunity to invite you to become our partner!Please visit our website at www.sealings.cn for detailed information on our organization.
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Send Inquiry to this Supplier
Yuyao Tenglong Sealing & Packing Factory
Ms. Echo Xu
Development Area Lianghui Yuyao, Ningbo, China

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