Discover the complete range of filler materials used in spiral wound gasket manufacturing. Compare sealing performance, chemical resistance, operating temperatures and engineering characteristics before selecting the right filler for your sealing application.
The filler material is the primary sealing medium in a spiral wound gasket, packed between the alternating layers of the metal winding to form a resilient, compressible seal. Different fillers are selected depending on process media, operating temperature, chemical compatibility and required sealing performance.
Select a filler material to view detailed engineering properties including material description, applicable standards, operating temperature and key sealing characteristics.
Flexible graphite is one of the most widely used filler materials for spiral wound gaskets due to its excellent sealing ability, chemical resistance and high-temperature stability. It is suitable for steam, hydrocarbons, acids and industrial process applications.
PTFE filler provides outstanding chemical resistance and low friction characteristics. It is selected for aggressive chemical environments where contamination-free sealing is required.
Modified PTFE fillers are enhanced PTFE formulations designed to improve creep resistance, dimensional stability and sealing performance compared with conventional PTFE.
Ceramic fiber fillers are used for extreme temperature applications where thermal insulation and resistance to high-temperature environments are required.
Mica filler materials provide excellent electrical insulation, thermal resistance and oxidation stability for high-temperature sealing applications.
Spiral wound gasket filler materials are selected based on process media, temperature and the level of sealing performance required across a wide range of industries.
Pipeline flanges, separators, valves, compressors and pressure vessels.
Reactors, heat exchangers, storage tanks, pumps and process piping systems.
High pressure and high temperature process equipment requiring reliable sealing.
Steam lines, turbines, condensers, boilers and auxiliary piping systems.
High-temperature thermal processing equipment requiring insulating fillers.
High purity production equipment, clean piping and sanitary processing systems.
Consistent compressibility and recovery for a dependable seal under varying loads.
Fillers selected to match the full operating temperature range of the application.
Resistance to the specific process media, acids and chemicals in service.
Available according to ASTM and other recognized material specifications.
Flexible graphite is the most widely used filler because it offers an excellent balance of sealing performance, chemical resistance and high-temperature stability across general industrial applications.
PTFE is recommended for aggressive chemical environments or applications requiring contamination-free, non-metallic sealing where graphite is not chemically compatible.
Ceramic fiber and mica are commonly selected for extreme-temperature service because of their superior thermal resistance and stability well beyond the limits of graphite and PTFE fillers.
Our engineering team can help you select the most suitable filler material for your operating pressure, temperature and service environment.
Contact Engineering