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PTFE Envelope Gasket is a kind of static seals. It is composed of elastic materials such as compressed asbestos sheet rubber, ceramics,etc. and PTFE envelope cover. PTFE has superior properties against chemical(not affected by all chemicals except moten alkali metal and fluorine at elevated temperature) and temperature(from -180℃+250℃). The coefficient of static and dynamic friction of PTFE are very low. PTFE is the best of the " non- stick "material. It has excellent weathering and aging characteristics.
PTFE Envelope Gasket is used to seal pipe flange and joint of industrial machinery apparatus which is lined with rubber,plastic ceramics,graogite etc.
Outside Diameter | Inside Diameter | Thickness |
1-7/8”(48mm) | 1/2”(12.7mm) | 0.04”(1.02mm) 1/16”(1.6mm) 3/16”(4.8mm) 1/4”(6.4mm) |
2-1/4”(57mm) | 3/4”(19mm) | |
2-5/8”(67mm) | 1”(25.4mm) | |
3-3/8”(86mm) | 1-1/2”(38mm) | |
4-1/8”(105mm) | 2”(51mm) | |
5-3/8”(136.5mm) | 3”(76mm) | |
6-7/8”(175mm) | 4”(102mm) | |
8-3/4”(222mm) | 6”(152mm) | |
11”(279mm) | 8”(203mm) |
* Specific products could be made according to customers’requirements.


Hitex is supplying various of high temperature fabrics &textiles for thermal insulation, fire fighting, welding & cutting protecting, sealing & gaskets, refractory and composite industries. The technical fabrics are available with difference coating & treatment to working for extreme temperature and conditions etc.
Q1.You are a trading company or manufacturer?
We are manufacturer with more than 10 years production experience, and we have our own factory in yuyao
.
Q2.Can you send me a sample? Is it free?
Yes, the samples is free, but the courier charge should be on your side
Q3.Mode of transportation?
By sea or by air
Q4.How about the Delivery time?
Usually around 2-3 weeks after order confirmed
Q5.Can you product the customized goods?
Surely, we can be customized according to your demanding.
Q6.Do you have other production?
Certainly, We, Hitex are supplying various of high temperature fabrics &textiles for thermal insulation, fire fighting, welding & cutting protecting, sealing & gaskets, refractory and composite industries. The technical fabrics are available with difference coating & treatment to working for extreme temperature and conditions etc.
Q7.What kinds of payment you accept?
We accept T/T, D/A, L/C,D/P,O/A
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