ASTM | TEST METHOD | G10 (FR4) | G11 (FR5) |
---|---|---|---|
D149 | Dielectric Strength KV/mm Short Time | 29.5 ÷ 31.5 | 19.7 |
D695 | Compressive Strength (Kpsi) | 65 | 50 |
D790 | Flexural Strength (Kpsi) | 65 | 57 |
D638 | Tensile Strength (Kpsi) | 50 | 41 |
D570 | Water Adsorption (%) | 0.05 | 0.10 |
- | Temperature - Operatimg | -130°C to +150°C | -45°C to +200°C |
- | ANSI Gasket Pressure Range | Classes 150 ÷ 2500 psi | |
- | API Gasket Pressure Range | API 2000 ÷ 10000 psi | |
- | PN Gasket Pressure Range | PN 6 ÷ 420 |
The grid shows the average values of the materials properties
Guardian Premium IS flange isolation kits do not use any metallic retainers, as GRE acts both as the retainer and the insulator.
The gasket can be used on RF, FF, and also RTJ flanges, replacing the inefficient phenolic Ring Joints.
Sealing is achieved either with PTFE or nitrile or fluorinated rubber.
The gasket groove is designed to prevent retainer breakage in case of overstress and to enhance the elasticity of the sealing element.
Guardian Premium IS is suitable for use up to 200°C, depending on the selected GRE, in ANSI 150 - 1500#, API 2 - 5K#, and PN 6 - 250# ratings.