|
|
GORE-TEX® Dynacore™ Technical Information
Metal Reinforced Gasket for High Thermal Cycling
|
Stress to seal:
32 rms surface
30 psig (2 bar) air
|
2,500 psi
(17 Mpa)
|
|
High-pressure sealability:
PVRC-ROTT mg/sec
800 psig (54 bar) helium
3,000 psi (21 Mpa) gasket stress
|
2 x 10 -5mg/sec
|
|
Maximum gasket stress:
PVRC-ROTT/Crush
|
>20,000 psi
(138Mpa)
|
|
Gasket constants:
(PVRC definitions)
|
G b=238 psi.
a=0.229
G s= 6.5 x 10 -7psi
|
Construction flexibility
Sandwiched between layers of strong, conformable GORE-TEX GR® sheet gasketing, the metallic insert is available in a variety of metals. Since the basic construction is not intended to completely isolate the core from the process fluids, the metal should be selected on the basis of its compatibility with these fluids. In addition to the standard construction, gaskets are available with either a PTFE or a metal envelope. GORE-TEX® Dynacore™ gaskets are available in 1/8" thickness.
|
Standard construction: For most applications where 316L stainless steel or other process compatible metal is used. |
|
PFTE envelope construction: For applications where additional protection for the metal insert is required. |
|
Metal envelope construction: For applications where additional blowout resistance is needed. |
Blowout Resistance (ANSI 3" X 150 Flange)
The blowout temperature of GORE-TEX Dynacore gasketing at three different internal pressures. Note that in all cases, the failure temperature is well above that of other PTFE alternatives and the maximum recommended temperature of 600°F (315°C).
Testing performed by TTRL.
Tightness levels
Independent test confirm both tightness and enhanced blowout resistance. GORE-TEX Dynacore gasketing exhibits a high level of tightness, even during extreme stress cycling. The maximum tightness capability exceeds 37,000 Tp.
|
Stress
|
Tightness (Tp)
|
|
1,000 psi (7 Mpa)
|
> 101
|
|
3,000 psi (21 Mpa)
|
> 6,000
|
|
5,000 psi (35 Mpa)
|
> 10,000
|
|
7,500 psi (51 Mpa)
|
> 20,000
|
|
10,000 psi (69 Mpa)
|
> 30,000
|
|
Products
