Welcome to Learning About Phenolic Flange Isolation Gasket
The phenolic flange isolation gasket helps the pipeline and piping system work correctly by keeping electricity from passing through and protecting against corrosion. It offers an effective seal, electrical isolation, and corrosion protection for flanges. By removing metal-to-metal contact, we reduce corrosion and improve the cathodic protection of the pipe.
Available Types
Type E is full-faced, while Type F is raised.
Advantages
The phenolic flange isolation gasket is a particularly effective choice for non-potable water applications and non-metallic flanges.
Applications
It is suitable for non-potable water, utility gas applications, and aliphatic hydrocarbons.
Properties of Flange Isolation Gasket Materials
| Gasket Materials | Dielectric Strength | Compressive Strength | Water Absorption | Tensile Strength | Operating Temp (°C) |
|---|---|---|---|---|---|
| Plain Phenolic | 500 vpm | 25 ksi | 1.6% | 20 ksi | -54 to 104 |
| Neoprene Faced Phenolic | 500 vpm | 25 ksi | 1.6% | 20 ksi | -54 to 79 |
| Reinforced PTFE | 350 vpm | 2.3 ksi | 0.01% | 1.5 ksi | -196 to 260 |
| G7 | 350 vpm | 40 ksi | 0.07% | 25 ksi | -196 to 232 |
| G10 | 550 vpm | 55 ksi | 0.1% | 45 ksi | -196 to 138 |
| G11 | 550 vpm | 57 ksi | 0.1% | 43 ksi | -196 to 176 |



