McMaster-Carr logo
    Filter by
    Foam Cell Type
    For Maximum Joint Width
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Maximum Temperature
    Minimum Temperature
    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)
    3 Products
    About Sealants
    industrial info icon

    Select a sealant that can stretch, contract, and expand enough for your joints.

    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.
    Closed-Cell Foam—Closed-cell backer rods restrict moisture from being absorbed. Use them with joints that have wide, even spaces.
    Open/Closed-Cell Foam—Open/closed backer rods are more compressible than closed-cell ones. They also restrict moisture from being absorbed. Use them with uneven joints where self-leveling is needed.
    Cross-Linked Polyethylene Foam—Cross-linked polyethylene backer rods can be used with tar, asphalt, cement, and other hot-pour sealants.
    For Max.
    Joint Wd.
    Dia.
    Lg.,
    yd.
    Min. Temp.,
    ° F
    Max. Temp.,
    ° F
    Color
    Each
    Closed-Cell Polyethylene Foam
    1 1/8"1 1/2"140-45160Black77605T1180000000
     
    Closed-Cell Cross-Linked Polyethylene Foam
    1 1/4"1 1/2"132Not Rated390Beige77605T108000000
     
    Open/Closed-Cell Polyethylene Foam
    1 1/8"1 1/2"140-45160Gray77605T466000000
     
    back to top