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ImmerSeal® pre-cured silicone sealant is effective in a variety of waterproofing applications in RV & Cargo Trailer manufacturing & repair. Due to its unique properties, ImmerSeal® can be used for sealing around roof penetrations, sealing roof to wall transitions, and sealing roof and wall seams in RVs and cargo trailers. ImmerSeal® is also an excellent choice for sealing holes, tears and other repair applications.
ImmerSeal® can be used to seal around RV windows & doors as well as interior applications such as shower enclosures.

Figure 1: Caulk smeared over the seams on a cargo trailer roof |

Figure 2: Attractive and functional ImmerSeal® installed on the cargo trailer seams |
Key features & Applications of ImmerSeal® for RVs & Cargo Trailers include:
- High flexibility & uniform size allows ImmerSeal® to seal RV/Cargo Trailer applications more effectively than typical caulk, while maintaining an aesthetically pleasing appearance. (Figures 1-4)
- Material can be easily cut to seal straight or rounded penetrations, including vents, windows, & doors. (Figure 4)
- 100% silicone formulation provides a long lasting seal that won’t crack or leak.
- Ultra low modulus provides high elasticity and movement capability.
- Versatile material can be used in both exterior & interior applications, such as:
- Vent, ladder, & antenna penetrations (Figure 4)
- Roof & wall seams (Figure 2)
- Window & door perimeters
- Shower enclosures
- Wide operational temperature range.
- Available in a wide variety of widths, thicknesses, colors, & configurations.
- Ideal for repair of failed caulk, tears & holes.
- Use ImmerBond® silicone adhesive to adhere ImmerSeal® to a variety of substrates, including fiberglass, EPDM, metal, vinyl, TPO, wood & many others.
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RV/Cargo Trailer Information Sheet
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Figure 3: Unsightly “caulk” prone to degradation, cracking and leaking |

Figure 4: Aesthetically pleasing ImmerSeal® will withstand long term weathering & UV exposure |
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