SUNWELL SW600-V835 is a kind of Spiral Wound Gasket with the Vermiculite filler.

It's a critical service gasket designed for use in applications involving high temperature and/or aggressive chemical media.

It is comprised of a sprially wound sealing element composed of a metal winding wire in combination with a Vermiculite based filler material

Materials:

Filler Materials: Vermiculite (SUNWELL V835)

Winding strips: SS316L, 304, Inconel, Monel and others available materials.

Maximum recommended temperature:

980 Deg Centigrade (1800 Fahrenheit Deg)

Typical Physical Properties:

Thickness: 0.5mm

Density: 1.2~1.3g/cm3

ASTM Tensile Strength: 4.0~4.5 Mpa

Leachable Chloride ion Content: < 50 ppm

Leachable Fluoride ion Content: < 50 ppm

Comparative Analysis of Mica Filler and Vermiculite Filler in Spiral Wound Gaskets

1.1 Temprature Resistance

Mica-filled Tape: Suitable for temperatures ranging from -200 centi Degree to +1,000 centi Degree, with stable electrical insulation properties.

Vemiculite-filled Tape : Slighty lower maximum temperature tolerance (-200 Centi Degree to +900 Cent Degree, but exhibits supeior pefomance in high oxidative environments due to its exfoliated porous structure after expansion (melting point up to 1,300 Centi Degree).

1.2 Mechanical and Chemical Performance

Mica: High mechanical strength and resistance to chemical corrosioin (acid, akali, and salt), idea for high-pressure sealing

Vermiculite: Stable sealing under thermal cycling conditions due to its layered structure. Offers additional sound absorption and thermal insulation but lower compressive strength compared to mica

2. Economic Comparison

3. Operation Suitability

3.1 Recommended for Mica-filled Tape

High-pressure pipelines (>/=10MPa) or corrosive media (acids, alkalis)

Applications requiring electrical insulation (e.g. motors, power equipments)

3.2 Recommended for Vermiculite-filled Tape

High-temperature oxidative environments (e.g. furnaces, combustion engines)

Low-pressure sealing for thin or large-diameter flanges (more than 2 meters)

Scenatios needing fire resistance, thermal insulation, or noise reduction (e.g. high-temperature reactors)

4. Comprehensive Recommendations

Prioritize mica-based tape for standard high-pressure, corrosive environments with budget constraints.

Prioritize vermiculite-based tape for extreme temperatures (Near 1,000 centi degree) frequent thermal cycles, or thin-flange designs.

More information about SUNWELL SW600-V835 Sniral Wound Gasket with Vermiculite filler. Please contact with SUNWELL Sales Team and Technical Teams.