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    • Acoustic, thermal & electrical insulation materials for industrial, trade & specialist applications
    Bundles of phenolic fibreglass slot sticks for electric motor rewinding and stator insulation applications isolated on white background
    Bundles of phenolic fibreglass slot sticks for electric motor rewinding and stator insulation applications isolated on white background

    Motor Rewinding Insulation Materials

    Phenolic Fibreglass Slot Sticks for Electric Motor Rewinding

    Phenolic epoxy glass slot sticks are rigid electrical insulation wedges used to secure and separate winding coils within motor stator slots during motor rewinding and repair. Manufactured from glass reinforced phenolic laminate, they provide strong mechanical support combined with reliable dielectric insulation performance in demanding electrical applications.

    These slot wedges are commonly used in electric motors, generators, alternators and rotating electrical equipment where long-term dimensional stability, insulation reliability and resistance to heat and vibration are important.

    Supply Format
    • Supplied in bundles of 100 metres
    • Standard length: 750 mm
    • Commonly used for electric motor rewinding and repair applications

    Common Sizes Available

    Available in the same common sizes as traditional wooden slot sticks:

    3.2 mm
    4.0 mm
    4.8 mm
    5.55 mm
    6.4 mm
    7.9 mm
    9.5 mm
    12.7 mm
    Higher Mechanical Strength
    Provides significantly greater strength and durability compared to traditional wooden slot wedges, particularly in demanding industrial motor applications.
    Reliable Electrical Insulation
    Offers dependable dielectric insulation between winding conductors and laminated stator cores.
    Thermal Endurance
    Continuous temperature rating of 135°C with short-term temperature resistance up to 155°C.
    Common Applications
    • Electric motor rewinding and repair
    • Stator slot insulation systems
    • Generator and alternator winding support
    • Coil retention in rotating electrical equipment
    • Industrial motor maintenance workshops


    Slot wedge selection guide
    Which slot wedge material is right for your application?
    Different slot wedge materials offer different advantages depending on the motor design, operating temperature and mechanical requirements.
    Phenolic Fibreglass Slot Sticks
    Commonly used as a stronger alternative to traditional wooden slot sticks. Suitable for general motor rewinding, stator insulation and coil retention applications.
    Nomex® Shaped Wedges
    Class 180°C formed wedge profiles offering excellent electrical insulation and thermal performance for demanding motor rewind applications.
    G10 / G11 Epoxy Glass Slot Wedges
    Rigid epoxy glass wedges offering excellent mechanical strength, dimensional stability and dielectric performance for industrial motors and generators.
    ADVANCED THERMAL SUPPLIES PTY LTD
    📍 30 Pope St, Beverley SA 5009
    📞 08 8244 4411
    ✉️ info@advancedthermalsupplies.com.au
    🕒 Monday – Friday: 8:30 AM – 5:00 PM
    Note: We occasionally close at 4:00 PM on Thursdays.
    Please call ahead if you're visiting late in the day.
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