PF Grade
Advanced High Temperature

PF Grade purging compound is specifically formulated for super-engineering resins at processing temperatures of up to 420°C (790°F). PF Grade is suitable for hot runner cleaning and may be used as a sealing material during machine shutdowns within temperature ranges of 280°C to 370°C (535°F to 700°F) due to its superior thermal stability.

Processing Temperature Range:

280°C-420°C (535°F-790°F)


    High-temperature, superior cleaning power.

    PF Grade maintains excellent thermal stability at high processing temperatures, making it suitable for hot runner cleaning. This purging compound is also used for sealing.

    PF Grade is exclusively used for purging super-engineering resins.

    Due to its superior thermal stability, PF Grade purging compound should be used for resins such as PPS and PEI.


    • High temperature purge
    • Designed for super-engineering resins
    • Superior cleaning power
    • Suitable for hot runner cleaning
    • Can be used for shutdown and sealing
    • Excellent thermal stability at high processing temperatures
    • No chemical reaction
    • No soak time required


    Usage Information

    Temperature Range 280°C to 420°C (535°F to 790°F)
    Minimum Clearance Requires 0.5 mm (0.020") clearance for hot runner gates and extrusion dies; works best if screen packs are removed, however, if not possible use the maximum 100 mesh size.
    Amount of Purge Typically 1-2 system capacities (actual amount depends on degree of contamination)
    Applications Injection Molding - including hot runners
    Extrusion - profile, sheet, cast film & compounding
    Types of Resin Exclusively used for purging super-engineering resins such as PPS, PEEK, ULTEM, LCP, PEI, etc.


    • For maximum performance, Asaclean® PF Grade should not be diluted with other materials.
    • Asaclean® PF Grade does not work by chemical reaction, so there is no soak time or hold-up time required for an effective purge. 
    • Asaclean® PF Grade works best with maximum agitation™ use the maximum safe screw speed and, for thermoplastic injection molding, also use maximum safe back pressure with the screw in the most forward position. 


    Physical Form Solid
    Shape Pellets
    Color Milky white - light yellow
    Water Solubility Insoluble
    Other Solvent Solubility Soluble in aromatic and ester solvents (except for inorganic content)
    Stability Stable under normal temperatures
    Reactivity Non-reactive under normal handling and storage conditions
    Conditions to Avoid Do not exceed recommended temperature range.
    Do not allow Asaclean® PF Grade to reside in barrel for ANY period of time at temperatures higher than 370°C (700°F)


    Specific Gravity 1.26 at 23°C (73°F)
    Softening Point 150°C (302°F)
    Flashpoint 460°C (860°F)
    Autoignition Temp 520°C (968°F)

    Packaging Options


    • 44 lb. bags (pictured)

    Please Note: The above data should be used for reference only.

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