McMaster-Carr logo
    Filter by
    Color
    Diameter
    Attribute Image
    For Maximum Joint Width
    Foam Cell Type
    Maximum Temperature
    Cell Type
    Material
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Minimum Temperature
    DFARS Specialty Metals
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    3 Products

    Backer Rods

    Image of ProductInUse. Front orientation. Backer Rods.
    Image of Product. Front orientation. Backer Rods.
    Image of Attribute. Front orientation. Contains Annotated, Border.
    Provide support for sealants in gaps—insert these backer rods into gaps and fill in with sealant.
    Open-Cell Foam—Open-cell backer rods are the most compressible and maintain their shape better than open/closed ones. They allow moisture to be absorbed. Although they withstand environments up to 500° F, they shouldn’t be used with hot-pour sealants, which can seep through the large cell size and damage the underlying surface.
    For Max.
    Joint Wd.
    Dia.
    Lg.,
    yd.
    Min. Temp.,
    ° F
    Max. Temp.,
    ° F
    Color
    Each
    Open-Cell Polyurethane Foam
    1/4"3/8"250-60500Black000000000000000
    1/2"5/8"166-60500Black00000000000000
    3/4"7/8"175-60500Black000000000000000
     
    back to top