Technical Resources

Sealing Material Comparison Guide

Quantitative parameter comparisons of carbon graphite, PTFE, metal alloy, silicon carbide and tungsten carbide sealing materials across temperature, strength, thermal conductivity, corrosion resistance and service life to guide pump, compressor and high-temperature material selection.

01Antimony vs Resin Impregnated Graphite: 500°C vs 220°C and Cost ComparedAntimony-impregnated graphite withstands 500°C; resin-impregnated graphite is limited to 220°C. This article compares temperature, strength, thermal conductivity, corrosion resistance, and cost to guide high-temperature pump seal and bearing selection.02Carbon Graphite vs Metal Alloy Seals: Self-Lubrication and Wear Life ComparisonCarbon graphite is self-lubricating and grease-free; metal alloy seals require external lubrication. This article compares friction coefficient, wear life, temperature and corrosion resistance, and maintenance cost to guide pump and compressor material selection.03Carbon Graphite vs PTFE Seals: Creep, Thermal Conductivity and Dimensional Stability ComparisonPTFE suffers severe creep causing seal-face pressure loss and leakage; carbon graphite is dimensionally stable. This article compares creep rate, thermal conductivity, temperature limit, hardness, and PV limit to guide chemical pump and compressor seal selection.04Silicon Carbide vs Tungsten Carbide Seal Faces: 150 vs 100 W/(m·K) ComparedSilicon carbide conducts 120–150 W/(m·K); tungsten carbide conducts 80–100 W/(m·K). This article compares hardness, thermal conductivity, corrosion resistance, PV limit, and cost to guide mechanical seal mating-face material selection.

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