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Therm-Coil Mfg. will be closed July 4-8, 2024 to allow us to celebrate Independence Day with our families.
Therm-Coil Mfg. will be closed July 4-8, 2024 to allow us to celebrate Independence Day with our families.

Ceramic Insulators

Ceramic bushings, made from Cordierite, for insulating electrical heating coils. 
  • PI-3/4-1 Ceramic Insulators - 50 Quantity Packs

    Original price $ 102.00
    Original price $ 102.00 - Original price $ 102.00
    Original price $ 102.00
    Current price $ 86.70
    $ 86.70 - $ 86.70
    Current price $ 86.70
    3+ in stock

    This ceramic bushing for insulating electrical heating coils is made from Cordierite and has a 3/4" O.D. x  5/16" I.D. x  3/8" thick.  See diagram ...

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    Original price $ 102.00
    Original price $ 102.00 - Original price $ 102.00
    Original price $ 102.00
    Current price $ 86.70
    $ 86.70 - $ 86.70
    Current price $ 86.70
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  • PI-5/8-1 Ceramic Insulator - 75 Quantity Packs

    Original price $ 105.45
    Original price $ 105.45 - Original price $ 105.45
    Original price $ 105.45
    Current price $ 89.63
    $ 89.63 - $ 89.63
    Current price $ 89.63
    5+ in stock

    This ceramic bushing for insulating electrical heating coils is made from Cordierite and has a 5/8" O.D. x 19/64" I.D. x  29/64" thick. See diagram...

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    Original price $ 105.45
    Original price $ 105.45 - Original price $ 105.45
    Original price $ 105.45
    Current price $ 89.63
    $ 89.63 - $ 89.63
    Current price $ 89.63
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  • PI-5/8-1 Ceramic Insulator - 50 Quantity Packs

    Original price $ 89.90
    Original price $ 89.90 - Original price $ 89.90
    Original price $ 89.90
    Current price $ 76.42
    $ 76.42 - $ 76.42
    Current price $ 76.42
    4+ in stock

    This ceramic bushing for insulating electrical heating coils is made from Cordierite and has a 5/8" O.D. x 19/64" I.D. x  29/64" thick. See diagram...

    View full details
    Original price $ 89.90
    Original price $ 89.90 - Original price $ 89.90
    Original price $ 89.90
    Current price $ 76.42
    $ 76.42 - $ 76.42
    Current price $ 76.42
    Save 15% Save %
  • PI-5/8-1 Ceramic Insulator - 25 Quantity Packs

    Original price $ 73.35
    Original price $ 73.35 - Original price $ 73.35
    Original price $ 73.35
    Current price $ 62.35
    $ 62.35 - $ 62.35
    Current price $ 62.35
    40+ in stock

    This ceramic bushing for insulating electrical heating coils is made from Cordierite and has a 5/8" O.D. x 19/64" I.D. x  29/64" thick. See diagram...

    View full details
    Original price $ 73.35
    Original price $ 73.35 - Original price $ 73.35
    Original price $ 73.35
    Current price $ 62.35
    $ 62.35 - $ 62.35
    Current price $ 62.35
    Save 15% Save %
  • PI-3/4-1 Ceramic Insulators - 75 Quantity Packs

    Original price $ 123.50
    Original price $ 123.50 - Original price $ 123.50
    Original price $ 123.50
    Current price $ 104.98
    $ 104.98 - $ 104.98
    Current price $ 104.98
    5+ in stock

    This ceramic bushing for insulating electrical heating coils is made from Cordierite and has a 3/4" O.D. x  5/16" I.D. x  3/8" thick.  See diagram ...

    View full details
    Original price $ 123.50
    Original price $ 123.50 - Original price $ 123.50
    Original price $ 123.50
    Current price $ 104.98
    $ 104.98 - $ 104.98
    Current price $ 104.98
    Save 15% Save %
  • PI-3/4-1 Ceramic Insulators - 25 Quantity Packs

    Original price $ 79.30
    Original price $ 79.30 - Original price $ 79.30
    Original price $ 79.30
    Current price $ 67.41
    $ 67.41 - $ 67.41
    Current price $ 67.41
    6+ in stock

    This ceramic bushing for insulating electrical heating coils is made from Cordierite and has a 3/4" O.D. x  5/16" I.D. x  3/8" thick.  See diagram ...

    View full details
    Original price $ 79.30
    Original price $ 79.30 - Original price $ 79.30
    Original price $ 79.30
    Current price $ 67.41
    $ 67.41 - $ 67.41
    Current price $ 67.41
    Save 15% Save %
  • PI-7/8-1 Ceramic Insulator - 75 Packs

    Original price $ 135.60
    Original price $ 135.60 - Original price $ 135.60
    Original price $ 135.60
    Current price $ 115.26
    $ 115.26 - $ 115.26
    Current price $ 115.26
    6+ in stock

    This ceramic bushing for insulating electrical heating coils is made from Cordierite and has a 7/8" O.D. x 13/32" I.D. x 7/16" thick. See diagram f...

    View full details
    Original price $ 135.60
    Original price $ 135.60 - Original price $ 135.60
    Original price $ 135.60
    Current price $ 115.26
    $ 115.26 - $ 115.26
    Current price $ 115.26
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  • PI-7/8-1 Ceramic Insulator - 50 Packs

    Original price $ 110.00
    Original price $ 110.00 - Original price $ 110.00
    Original price $ 110.00
    Current price $ 93.50
    $ 93.50 - $ 93.50
    Current price $ 93.50
    4+ in stock

    This ceramic bushing for insulating electrical heating coils is made from Cordierite and has a 7/8" O.D. x 13/32" I.D. x 7/16" thick. See diagram f...

    View full details
    Original price $ 110.00
    Original price $ 110.00 - Original price $ 110.00
    Original price $ 110.00
    Current price $ 93.50
    $ 93.50 - $ 93.50
    Current price $ 93.50
    Save 15% Save %
  • PI-7/8-1 Ceramic Insulator - 25 Pack

    Original price $ 83.40
    Original price $ 83.40 - Original price $ 83.40
    Original price $ 83.40
    Current price $ 70.89
    $ 70.89 - $ 70.89
    Current price $ 70.89
    5+ in stock

    This ceramic bushing for insulating electrical heating coils is made from Cordierite and has a 7/8" O.D. x 13/32" I.D. x 7/16" thick. See diagram f...

    View full details
    Original price $ 83.40
    Original price $ 83.40 - Original price $ 83.40
    Original price $ 83.40
    Current price $ 70.89
    $ 70.89 - $ 70.89
    Current price $ 70.89
    Save 15% Save %

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