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    79 Products
    About Composites
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    Compare our offering of composites to find the right material for you.

    Electrically Insulating Hard Fiber

    Image of Product. Front orientation. Hard Fiber. Electrically Insulating Hard Fiber.
    Widely known as fishpaper and vulcanized fiber, these thin sheets offer better electrical insulation than standard hard fiber sheets. They are constructed from lightweight cotton fabric that's been chemically treated to make it hard and dense.
    6" Wide ×
    12" Long
    12" Wide ×
    12" Long
    24" Wide ×
    39" Long
    39" Wide ×
    48" Long
    39" Wide ×
    60" Long
    Thk.
    Thk. Tolerance
    Tensile Strength
    Hardness
    Mil.
    Spec.
    Flammability
    Rating
    Color
    Max. Temp.,
    ° F
    Impact Strength
    For Use
    Outdoors
    Each
    Each
    Each
    Each
    Each
    0.005"-0.001" to 0.001"Not RatedRockwell R70 (Hard)MIL-I-695UL 94 HB
    		Gray2352.5 ft·lbf/in (Good)No000000000000000000000000000000000000000000000000000———0
    0.01"-0.001" to 0.001"Not RatedRockwell R70 (Hard)MIL-I-695UL 94 HB
    		Gray2352.5 ft·lbf/in (Good)No0000000000000000000000000000000000000000000000000000000000000
    0.015"-0.002" to 0.002"Not RatedRockwell R70 (Hard)MIL-I-695UL 94 HB
    		Gray2352.5 ft·lbf/in (Good)No000000000000000000000000000000000000000000000000000000000000
    0.02"-0.002" to 0.002"Not RatedRockwell R70 (Hard)MIL-I-695UL 94 HB
    		Gray2352.5 ft·lbf/in (Good)No000000000000000000000000000000000000000000000000———0
    0.025"-0.003" to 0.003"Not RatedRockwell R70 (Hard)MIL-I-695UL 94 HB
    		Gray2352.5 ft·lbf/in (Good)No00000000000000000000000000000000000000000000000000———0
    0.03"-0.003" to 0.003"Not RatedRockwell R70 (Hard)MIL-I-695UL 94 HB
    		Gray2352.5 ft·lbf/in (Good)No0000000000000000000000000000000000000000000000000———0
    0.04"-0.004" to 0.004"Not RatedRockwell R70 (Hard)MIL-I-695UL 94 HB
    		Gray2352.5 ft·lbf/in (Good)No00000000000000000000000000000000000000———0———0
    0.045"-0.005" to 0.005"Not RatedRockwell R70 (Hard)MIL-I-695UL 94 HB
    		Gray2352.5 ft·lbf/in (Good)No00000000000000000000000000000000000000———0———0
    0.062"-0.007" to 0.007"10,000 psi to 21,000 psi (Good)Rockwell R70 (Hard)MIL-I-695UL 94 HB
    		Gray2352.5 ft·lbf/in (Good)No———000000000000000000000000000000000000000———0

    Easy-Machine Hard Fiber Sheets

    Image of Product. Front orientation. Hard Fiber. Easy-Machine Hard Fiber Sheets.
    Also known as vulcanized fiber, these hard fiber sheets can be readily machined and punched into custom parts. They're constructed from lightweight cotton fabric that's been chemically treated to make them hard and dense. Use hard fiber to make gears and bushings.
    12" Wide ×
    12" Long
    24" Wide ×
    39" Long
    39" Wide ×
    48" Long
    Thk.
    Thk. Tolerance
    Tensile Strength
    Hardness
    Mil. Spec.
    Flammability
    Rating
    Color
    Max. Temp.,
    ° F
    Impact Strength
    For Use
    Outdoors
    Each
    Each
    Each
    0.02"-0.002" to 0.002"9,000 psi to 21,000 psi (Good)Rockwell R70 (Hard)MIL-I-695UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No000000000000000000000000000000000000000
    0.03"-0.003" to 0.003"9,000 psi to 21,000 psi (Good)Rockwell R70 (Hard)MIL-I-695UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No000000000000000000000000000000000000
    1/16"-0.005" to 0.005"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No0000000000000000000000000000000000000
    3/32"-0.007" to 0.007"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No00000000000000000000000000000000000000
    1/8"-0.015" to 0.015"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No00000000000000000000000000000000000000
    3/16"-0.015" to 0.015"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No00000000000000000000000000000000000000
    1/4"-0.015" to 0.015"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No00000000000000000000000000000000000000
    3/8"-0.02" to 0.02"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No00000000000000000000000000000000000000000
    1/2"-0.025" to 0.025"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No00000000000000000000000000000000000000000

    Easy-Machine Hard Fiber Rods

    Image of Product. Front orientation. Hard Fiber. Easy-Machine Hard Fiber Rods.
    Frequently used to make gears and bushings, these hard fiber rods can be readily machined and punched into custom parts. They are constructed from lightweight cotton fabric that's been chemically treated to make them hard and dense. Hard fiber is also known as vulcanized fiber.
    45" Long
    Dia.
    Dia. Tolerance
    Tensile Strength
    Hardness
    Mil. Spec.
    Flammability
    Rating
    Color
    Max. Temp.,
    ° F
    Impact Strength
    For Use
    Outdoors
    Each
    3/16"-0.005" to 0.005"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No0000000000000
    1/4"-0.005" to 0.005"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No000000000000
    5/16"-0.006" to 0.006"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No000000000000
    3/8"-0.006" to 0.006"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No000000000000
    1/2"-0.006" to 0.006"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No000000000000
    9/16"-0.006" to 0.006"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No0000000000000
    5/8"-0.006" to 0.006"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No0000000000000
    3/4"-0.006" to 0.006"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No0000000000000

    Easy-Machine Hard Fiber Round Tubes

    Image of Product. Front orientation. Hard Fiber. Easy-Machine Hard Fiber Round Tubes.
    Readily machined and punched into custom parts, these hard fiber round tubes are often made into bushings and washers. Also known as vulcanized fiber, they're constructed from lightweight cotton fabric that's been chemically treated to make it hard and dense.
    40" Long
    Wall
    Thk.
    Wall Thk.
    Tolerance
    OD
    OD Tolerance
    ID
    ID Tolerance
    Tensile Strength
    Hardness
    Mil. Spec.
    Flammability
    Rating
    Color
    Max. Temp.,
    ° F
    Impact Strength
    For Use
    Outdoors
    Each
    1/16"-0.01" to 0.01"9/16"-0.005" to 0.005"7/16"-0.008" to 0.008"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No0000000000000
    1/16"-0.01" to 0.01"5/8"-0.005" to 0.005"1/2"-0.008" to 0.008"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No000000000000
    1/16"-0.01" to 0.01"7/8"-0.005" to 0.005"3/4"-0.008" to 0.008"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No000000000000
    1/16"-0.01" to 0.01"1"-0.005" to 0.005"7/8"-0.008" to 0.008"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No000000000000
    1/8"-0.015" to 0.015"11/16"-0.005" to 0.005"7/16"-0.008" to 0.008"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No000000000000
    1/8"-0.01" to 0.01"3/4"-0.005" to 0.005"1/2"-0.008" to 0.008"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No000000000000
    1/8"-0.01" to 0.01"1 1/4"-0.008" to 0.008"1"-0.008" to 0.008"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No000000000000
    1/8"-0.01" to 0.01"1 1/2"-0.008" to 0.008"1 1/4"-0.01" to 0.01"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No000000000000
    1/8"-0.01" to 0.01"1 3/4"-0.008" to 0.008"1 1/2"-0.01" to 0.01"9,000 psi to 21,000 psi (Good)Rockwell R80 (Hard)MIL-F-10336, MIL-F-1148UL 94 HB
    		Gray2351.8 ft·lbf/in to 2.5 ft·lbf/in (Good)No000000000000
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