Vermiculite Spiral Wound Gasket
In 1987, Flexitallic experimented with a mica-encapsulated graphite seal to resist extreme temperature and pressure conditions. Although unsuccessful, our search led to discovery of vermiculite’s use in sealing—the basis for the incredibly versatile material
Welcome to Learn about Vermiculite Spiral Wound Gaskets
Our vermiculite spiral wound gasket can replace the Flexitallic Thermiculite 835 type, as the filler we use is vermiculite. It is a critical service gasket suitable for use in applications involving high temperatures and aggressive chemical media. The spirally wound sealing element of the gasket is made of a metal winding strip in combination with a vermiculite filler material.
Vermiculite Spiral Wound Gasket Application
A vermiculite spiral wound gasket is suitable for use in a wide range of sealing applications. It is a high-integrity seal in the most demanding environments and particularly suitable for high-temperature applications. Typical applications include superheated steam, strong oxidizing media, and elevated temperature service. Metallic components, winding strips, and rings can be selected to suit specific applications.
Service Temperature
This vermiculite spiral wound gasket can work well at high temperatures up to 980°C.
Construction
Filler Material: Vermiculite
Winding Strip: Typical SS316L (Others available)
Outer Ring: Typical SS316L (Others available)
Vermiculite spiral wound gaskets are available in various styles, R, CG, and CGI, to various standards, ASME, DIN, EN, etc. It can also be manufactured to customer drawings for non-standard vessel and heat exchanger applications.
Physical Properties of Vermiculite
| Item Name | Unit | Value |
|---|---|---|
| Thickness | mm | 0.5 |
| Density | g/cm3 | 1.2-1.3 |
| Tensile Strength | mpa | 3.38 |
| Max Working Temp | ℃ | 980 |