5121 ALPHATHANE 100% Solids Self-Leveling Sealant, Beige (9.8 Oz. Tube)

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ALPHATHANE 5121 by Alpha Systems, LLC is a non-shrinking, self-leveling sealant that is designed to work on flat, horizontal surfaces of your RV and can withstand the elements and wear and tear of travel. Plus, it’s now exclusively distributed by Lippert™.

Quick Facts:

  • Available colors: white, gray, black, beige, or almond
  • Size: 9.8 oz tube
  • Designed to withstand all weather conditions
  • Forms permanent elastic bond
  • Perfect for RV roofs and horizontal surfaces
  • Helps prevent air and moisture intrusion
  • Non-shrinking
  • Non-yellowing

Lippert™ is now the exclusive distributor of RV sealants and adhesives made by Alpha Systems, LLC.

Perfect for flat, horizontal surfaces like RV rooftops, ALPHATHANE 5121 is a high-strength, self-leveling, adhesive sealant that can withstand the wear and tear of outdoor elements. It exhibits excellent adhesion to wood, metal, glass, and most other common construction materials. Plus, once cured, it doesn’t shrink, and it can handle the shock and vibration caused by travel.


  • SURFACE COMPATIBILITY — Formulated as a high-strength, self-leveling, non-shrinking sealant — ALPHATHANE 5121 should be used on horizontal surfaces, such as RV roofs.
  • MULTIPLE COLOR OPTIONS — No matter the color of your RV’s roof, our sealant comes in a variety of options, including — white, beige, almond, and gray.
  • DESIGNED FOR THE ROAD — Once completely cured, this sealant is formulated to withstand the outdoor elements and the shocks, vibrations, and wear and tear of travel.
  • RECOMMENDED — Before use, please review all sealant application instructions and the provided safety information.

Application Instructions:

  • Ensure substrates are clean, dry, and free of oil and moisture
  • Exercise extra care during application to avoid air or debris entrapment
  • This product can be applied by a standard caulking gun
  • Do not use at temperatures below 40 degrees Fahrenheit
  • Once applied, do not handle, move, or pack for 1 hour

Warning: Cancer and reproductive harm. www.P65Warnings.ca.gov
More Information
SKU 862221
Brand Alpha Systems
Quantity In Package 1
Country of Origin United States
Sales Unit of Measure EA
UPC 846732079309
Manufacturer Reference Number N512104TLCI

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