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PTFE Envelope Gasket 

PTFE  Envelope Gasket with a good quality product filled with filler that have  excellent compressibility  
and recovery inside, is coated with PTFE that have excellent  chemical-resitance  
and stress-relaxation is small in high load, have a excellent seal ability.

PTFE Envelope Gasket
1.Full Envelope Gasket  
2.Half Envelope Gasket

General Applications: Strong acids alkalis, Oxygen  chlorine gas,  
Flange  parts for organic solvent, Gaskets for electric insulation flange. 

Gasket Core: Metallic Gasket ,Asbestos, Non Asbestos,  Rubber, Millboard

Temperature: -100º C - 250º C
Pressure: 5 Mpa
Supplying  Size: DN 10-600mm / NPS 1/2"~24"
Stardand:ASMEB16.21,DIN,GB,HGT ect.

Certificater: FDA 21 CFR177.1550,ROHS,MSDS
The Third Party Inspection Institution:TUV Germany 

PTFE Envelope Gaskets are available in a wide variety of models.
Typical Styles:

Non-asbestos Jointing Sheet
Non-asbestos Jointing sheet is made from synthetic fibre, natural rubber,compression moilding it.
Used for the equipment in water,steam,etc and used as sealing material in the joints of pipeline. 

Normal colour: Black with some white, Blue or Green-white etc.
Material:available with tin steel, copper, SS304 etc. wire mesh insertion,
Resistance to to media: Water, seawater, steam, fuel, gases, salt solutions and many other media. 

Data Sheet:

Item	TXB200	TXB300	TXB400
Density g/cm3	1.8~2.0	1.8~2.0	1.8~2.0
Tensile strength =Mpa	6	9	12.5
Compressibility =%	12±5	12±5	12±5
Recovery =%	40	45	45
Aging Coefficient	0.9	0.9	0.9
Stress Relaxation =%	45	45	45
Steam Sealing	Tmax:   200?	Tmax:   300?	Tmax:   400?
	Pmax: 2~3Mpa	Pmax: 4~5Mpa	Pmax: 8~9Mpa
	30min	30min	30min
	no shock	no shock	no shock
Tmax:  ?	200	300	400
Pmax:  Mpa	1.5	3	5
Resistance To Media	Water, seawater, steam, fuel,  gases, salt solutions

Drawing:

Standard ASME B 16.21

 150 Class & 300 Class

          ASME B16.21 

          600 Class & ASME B16.47

          ASME B 16.47

          Class 300 & Class 600

certifications

The workshop

Panyment