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    14 Products
    About Selecting Thermal Insulation
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    Compare R-value and temperature range to find the insulation material that best suits your application.

    Graphite Insulation Sheets for Furnaces

    Image of Product. Front orientation. Insulation Sheets. Graphite Insulation Sheets for Furnaces.
    Insulate high-vacuum furnaces and other low-oxygen vacuum enclosures with these flexible sheets. These sheets withstand higher temperatures when used in a vacuum.
    2 ft. Long
    4 ft. Long
    Thk.
    Wd.
    Insulation
    R Value
    Flexibility
    Max. Temp.,
    ° F
    Thermal Conductivity @ Temp.
    Density,
    lb/ft³
    Color
    Max. Temp. in
    a Vacuum, ° F
    Each
    Each
    1/4"24"Not RatedFlexible7500.2 BTU⋅in/(hr⋅ft²⋅°F) @ 2,550° F7.49Black4,3504579N1100000004579N120000000
    1/2"24"Not RatedFlexible7500.2 BTU⋅in/(hr⋅ft²⋅°F) @ 2,550° F7.49Black4,3504579N130000004579N14000000

    Rigid Graphite Insulation Sheets for Furnaces

    Image of Product. Front orientation. Insulation Sheets. Rigid Graphite Insulation Sheets for Furnaces.
    Insulate high-vacuum furnaces and other low-oxygen vacuum enclosures with these rigid sheets. They withstand higher temperatures when used in a vacuum and can be machined through sawing or drilling.
    Foil Facing—Sheets are foil faced to increase heat retention and longevity.
    Wd.
    Lg.
    Insulation
    R Value
    Facing
    Material
    Flexibility
    Max. Temp.,
    ° F
    Max. Facing
    Temp., ° F
    Thermal Conductivity @ Temp.
    Density,
    lb/ft³
    Color
    Max. Temp. in
    a Vacuum, ° F
    Each
    1" Thick
    24"52"Not RatedFoilRigid7509501.7 BTU⋅in/(hr⋅ft²⋅°F) @ 1,500° F14.98Black5,4304346N110000000
    40"60"Not RatedFoilRigid7509501.7 BTU⋅in/(hr⋅ft²⋅°F) @ 1,500° F14.98Black5,4304346N1200000000
     
    1 1/2" Thick
    24"52"Not RatedFoilRigid7509501.7 BTU⋅in/(hr⋅ft²⋅°F) @ 1,500° F14.98Black5,4304346N1300000000
    40"60"Not RatedFoilRigid7509501.7 BTU⋅in/(hr⋅ft²⋅°F) @ 1,500° F14.98Black5,4304346N1400000000
     
    2" Thick
    24"52"Not RatedFoilRigid7509501.7 BTU⋅in/(hr⋅ft²⋅°F) @ 1,500° F14.98Black5,4304346N1500000000
    40"60"Not RatedFoilRigid7509501.7 BTU⋅in/(hr⋅ft²⋅°F) @ 1,500° F14.98Black5,4304346N1600000000
     
    4" Thick
    24"52"Not RatedFoilRigid7509501.7 BTU⋅in/(hr⋅ft²⋅°F) @ 1,500° F14.98Black5,4304346N1700000000
    40"60"Not RatedFoilRigid7509501.7 BTU⋅in/(hr⋅ft²⋅°F) @ 1,500° F14.98Black5,4304346N1800000000
     

    Vacuum Furnace Thread

    Image of Product. Front orientation. Thread. Vacuum Furnace Thread.
    Image of Product. Front orientation. ZoomedIn view. Thread. Vacuum Furnace Thread.
    Sew insulation and secure materials in vacuum furnaces. This carbon thread withstands heat up to 4350° F in a vacuum. When oxygen is present, the maximum temperature is reduced to 750° F.
    Dia.
    Breaking Strength,
    lbf
    Can Be
    Spliced
    Max. Temp. in
    a Vacuum, ° F
    Max. Temp.,
    ° F
    Color
    Lg.,
    ft.
    Each
    Carbon
    0.059"160Yes4,350750Black4907399N110000000
    0.079"230Yes4,350750Black4107399N12000000
     
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