McMaster-Carr logo
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    50 Products
    About Composites
    industrial info icon

    Compare our offering of composites to find the right material for you.

    Arc-Resistant GPO3 Fiberglass U-Channels

    Image of Product. Front orientation. Fiberglass. Arc-Resistant GPO3 Fiberglass U-Channels.
    These GPO3 fiberglass U-channels are often used for electrical applications in humid environments. They are arc and track resistant, plus they have better electrical insulation properties than FRP fiberglass. Made of fiberglass-reinforced polyester, they're also called polyester-grade industrial laminate.
    Outside
    Inside
    3 ft. Long
    5 ft. Long
    6 ft. Long
    Wd.
    Wd. Tolerance
    Ht.
    Ht. Tolerance
    Wd.
    Ht.
    Straightness
    Tolerance
    Color
    Temp. Range,
    ° F
    Tensile Strength,
    psi
    Impact Strength,
    ft·lbf/in
    Hardness
    For Use
    Outdoors
    Each
    Each
    Each
    UL 94 V-0
     
    1/16" Thick Wall (-0.015" to 0.015")
    2 3/16"-0.062" to 0.062"3/4"-0.062" to 0.062"1 3/4"11/16"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K311000000———0
     
    1/8" Thick Wall (-0.025" to 0.025")
    2 9/16"-0.063" to 0.063"1 7/32"-0.032" to 0.032"2 5/16"1 3/32"0.050"/1 ft.Red—10,000 to 15,0008.2 to 12Barcol 50 (Hard)No8523K11000000———08523K21000000
     
    1/8" Thick Wall (-0.02" to 0.02")
    2"-0.062" to 0.062"9/16"-0.062" to 0.062"1 3/4"7/16"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K3200000———0
    2"-0.062" to 0.062"13/16"-0.062" to 0.062"1 3/4"11/16"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K33100000———0
    2 5/16"-0.062" to 0.062"3/4"-0.062" to 0.062"2 1/16"5/8"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K34100000———0
    3 19/32"-0.062" to 0.062"1 1/8"-0.062" to 0.062"3 11/32"1"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K35100000———0
    4 1/2"-0.062" to 0.062"2 1/2"-0.062" to 0.062"4 1/4"2 3/8"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K36100000———0
    9 21/32"-0.062" to 0.062"1 5/8"-0.062" to 0.062"9 13/32"1 1/2"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K371000000———0
     
    5/32" Thick Wall (-0.02" to 0.02")
    5 1/2"-0.062" to 0.062"1 1/4"-0.062" to 0.062"5 3/16"1 3/32"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K3800000———0
     
    3/16" Thick Wall (-0.025" to 0.025")
    3 9/16"-0.063" to 0.063"2 9/16"-0.032" to 0.032"3 3/16"2 3/8"0.050"/1 ft.Red—10,000 to 15,0008.2 to 12Barcol 50 (Hard)No8523K1200000———08523K2200000
    4 3/4"-0.063" to 0.063"1 5/8"-0.032" to 0.032"4 3/8"1 7/16"0.050"/1 ft.Red—10,000 to 15,0008.2 to 12Barcol 50 (Hard)No8523K1400000———08523K2400000
     
    3/16" Thick Wall (-0.02" to 0.02")
    4"-0.062" to 0.062"1 3/8"-0.062" to 0.062"3 5/8"1 3/16"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K3900000———0
    8 1/2"-0.062" to 0.062"2 11/16"-0.062" to 0.062"8 1/8"2 1/2"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K41000000———0
     
    1/4" Thick Wall (-0.025" to 0.025")
    6 1/2"-0.040" to 0.040"2 3/4"-0.020" to 0.020"6"2 1/2"0.050"/1 ft.Red—10,000 to 15,0008.2 to 12Barcol 50 (Hard)No8523K1600000———08523K26000000
     
    1/4" Thick Wall (-0.02" to 0.02")
    2"-0.062" to 0.062"1"-0.062" to 0.062"1 1/2"3/4"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K4200000———0
    3"-0.062" to 0.062"7/8"-0.062" to 0.062"2 1/2"5/8"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K4300000———0
    3"-0.062" to 0.062"1 1/2"-0.062" to 0.062"2 1/2"1 1/4"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K4400000———0
    4"-0.062" to 0.062"1 1/8"-0.062" to 0.062"3 1/2"7/8"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K45000000———0
    4 1/2"-0.062" to 0.062"2 1/2"-0.062" to 0.062"4"2 1/4"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K46000000———0
     
    3/8" Thick Wall (-0.02" to 0.02")
    11 9/32"-0.062" to 0.062"1 5/8"-0.032" to 0.032"10 17/32"1 1/4"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08523K47000000———0
     

    Arc-Resistant GPO3 Fiberglass Hat Channels

    Image of Product. Front orientation. Fiberglass. Arc-Resistant GPO3 Fiberglass Hat Channels.
    Unlike similar U-channels, these GPO3 fiberglass hat channels have flanges for mounting to flat surfaces. Use them to route and insulate wire in humid environments. All of these hat channels are arc and track resistant. They also have better electrical insulation properties than FRP fiberglass. Made of fiberglass-reinforced polyester, they're often called polyester-grade industrial laminate.
    Outside
    Inside
    5 ft. Long
    Wd.
    Wd. Tolerance
    Ht.
    Ht. Tolerance
    Wd.
    Ht.
    Straightness
    Tolerance
    Color
    Temp. Range,
    ° F
    Tensile Strength,
    psi
    Impact Strength,
    ft·lbf/in
    Hardness
    For Use
    Outdoors
    Each
    UL 94 V-0
     
    1/8" Thick Wall (-0.02" to 0.02")
    4 19/32"-0.062" to 0.062"7/8"-0.062" to 0.062"2 5/32"3/4"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Barcol 50 (Hard)No8986N201000000
    5"-0.062" to 0.062"1 3/8"-0.062" to 0.062"3"1 1/4"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Barcol 50 (Hard)No8986N20200000
     
    3/16" Thick Wall (-0.02" to 0.02")
    9 9/16"-0.062" to 0.062"2 3/8"-0.062" to 0.062"7 1/16"2 1/4"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Barcol 50 (Hard)No8986N203000000
     

    Arc-Resistant GPO3 Fiberglass 90° Angles

    Image of Product. Front orientation. Fiberglass. Arc-Resistant GPO3 Fiberglass 90° Angles.
    Because these GPO3 fiberglass 90° angles are arc and track resistant, they are often used for electrical applications in humid environments. They offer better electrical insulation properties than FRP fiberglass. Made of fiberglass-reinforced polyester, they're also called polyester-grade industrial laminate.
    Outside
    Inside
    3 ft. Long
    5 ft. Long
    6 ft. Long
    Wd.
    Wd. Tolerance
    Ht.
    Ht. Tolerance
    Wd.
    Ht.
    Straightness
    Tolerance
    Color
    Temp. Range,
    ° F
    Tensile Strength,
    psi
    Impact Strength,
    ft·lbf/in
    Hardness
    For Use
    Outdoors
    Each
    Each
    Each
    UL 94 V-0
     
    1/8" Thick Wall (-0.020" to 0.020")
    1 1/4"-0.062" to 0.062"1 1/4"-0.062" to 0.062"1 1/8"1 1/8"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08522K736000000———0
    1 1/2"-0.062" to 0.062"1 1/2"-0.062" to 0.062"1 3/8"1 3/8"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08522K73700000———0
     
    3/16" Thick Wall (-0.020" to 0.020")
    1 1/4"-0.062" to 0.062"1 1/4"-0.062" to 0.062"1 1/16"1 1/16"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08522K73800000———0
    1 1/2"-0.062" to 0.062"1 1/2"-0.062" to 0.062"1 5/16"1 5/16"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08522K73900000———0
    2"-0.062" to 0.062"2"-0.062" to 0.062"1 13/16"1 13/16"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08522K742000000———0
    2 1/4"-0.062" to 0.062"1 1/2"-0.062" to 0.062"2 1/16"1 5/16"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08522K74300000———0
    2 1/2"-0.062" to 0.062"1 1/4"-0.062" to 0.062"2 5/16"1 1/16"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08522K744000000———0
    2 9/16"-0.063" to 0.063"1 5/8"-0.032" to 0.032"2 3/8"1 7/16"0.050"/1 ft.Red—15,000 to 17,0008.2 to 12Barcol 40 (Hard)No8522K13000000———08522K23000000
    4"-0.063" to 0.063"1 5/8"-0.032" to 0.032"3 13/16"1 7/16"0.050"/1 ft.Red—15,000 to 17,0008.2 to 12Barcol 40 (Hard)No8522K1400000———08522K24000000
     
    1/4" Thick Wall (-0.020" to 0.020")
    1 1/2"-0.062" to 0.062"1 1/2"-0.062" to 0.062"1 1/4"1 1/4"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08522K74500000———0
    2"-0.063" to 0.063"2"-0.032" to 0.032"1 3/4"1 3/4"0.050"/1 ft.Red—15,000 to 17,0008.2 to 12Barcol 40 (Hard)No8522K1500000———08522K2500000
    2 3/4"-0.062" to 0.062"2"-0.062" to 0.062"2 1/2"1 3/4"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08522K746000000———0
    3"-0.063" to 0.063"2 3/4"-0.032" to 0.032"2 3/4"2 1/2"0.050"/1 ft.Red—15,000 to 17,0008.2 to 12Barcol 40 (Hard)No8522K1600000———08522K26000000
    3"-0.062" to 0.062"3"-0.062" to 0.062"2 3/4"2 3/4"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08522K747000000———0
     
    3/8" Thick Wall (-0.025" to 0.025")
    1 3/4"-0.062" to 0.062"2"-0.062" to 0.062"1 3/8"1 5/8"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08522K748000000———0
    3"-0.062" to 0.062"3"-0.062" to 0.062"2 5/8"2 5/8"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———08522K749000000———0
     
    1/2" Thick Wall (-0.025" to 0.025")
    6"-0.062" to 0.062"3"-0.062" to 0.062"5 1/2"2 1/2"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Rockwell M95 (Hard)No———0———08522K75000000
     

    Arc-Resistant GPO3 Fiberglass Square Tubes

    Image of Product. Front orientation. Fiberglass. Arc-Resistant GPO3 Fiberglass Square Tubes.
    Route and insulate wire using these square fiberglass tubes, which fit better along edges and around corners than round tubes. Use them for electrical applications in humid locations. They’re arc and track resistant, and better electrical insulators than FRP fiberglass. Made of fiberglass-reinforced polyester, they’re also known as polyester-grade industrial laminate.
    Outside
    Inside
    5 ft. Long
    Wd.
    Wd. Tolerance
    Ht.
    Ht. Tolerance
    Wd.
    Ht.
    Straightness
    Tolerance
    Color
    Temp. Range,
    ° F
    Tensile Strength,
    psi
    Impact Strength,
    ft·lbf/in
    Hardness
    For Use
    Outdoors
    Each
    UL 94 V-0
     
    1/8" Thick Wall (-0.02" to 0.02")
    1 1/2"-0.062" to 0.062"1 1/2"-0.062" to 0.062"1 1/4"1 1/4"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Barcol 50 (Hard)No4062N117000000
     
    1/4" Thick Wall (-0.02" to 0.02")
    2"-0.062" to 0.062"2"-0.062" to 0.062"1 1/2"1 1/2"0.050"/1 ft.Red-50 to 26510,000 to 15,0008.2 to 12Barcol 50 (Hard)No4062N118000000
     
    back to top