5121 ALPHATHANE Self-Leveling Sealant for 5th Wheel RVs, Travel Trailers and Motorhomes

★★★★★ 4.3 150 reviews

$21.88
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$21.88
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Free shipping Free 30-day returns

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Management number 232088019 Release Date 2026/06/18 List Price $8.75 Model Number 232088019
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When it comes to repairing and maintaining your RV's roof, windows, vents or doors, look no further than Alpha Systems. Exclusively distributed by Lippert™, the Alpha lineup of adhesives, sealants, tapes and roofing kits are specifically formulated to work together as a holistic system for your RV. Our 5121 ALPHATHANE self-leveling sealant is a must-have when repairing flat surfaces like your RV's roof. This is a high-strength, self-leveling, 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.The 5121 Alphathane self-leveling sealant comes in a single tube and is available in white, beige, gray or almond color options.With Alpha Systems, you get a holistic system of premium RV repair and maintenance products all designed to work together. From our self-leveling sealants to our butyl tapes, each Alpha product is carefully formulated in our labs and tested for superior performance. Our standard is to never settle for status quo. We’re constantly raising the bar, innovating and improving our family products, in every detail. That’s why RV manufacturers, dealerships and service technicians throughout the industry trust our name when it comes to giving their customer a product they can rely on. And better yet, all of our high-quality sealants, adhesives and tapes are made in the heart of RV country, right here in the USA. Alpha Systems, trusted by the pros, formulated for your RV.Whether you’re on the road or on the water, Lippert supplies a broad array of premium RV, towing, and marine products designed to enhance all of your recreational pursuits. Our team is committed to always thinking about your next journey — pushing the possibilities of our products and services, all to better your time spent outdoors, whenever, wherever, for years to come.

  • COMPATIBILITY — Great for flat, horizontal surfaces on your RV like your rooftop
  • MADE TO PERFORM — Provides a high-strength adhesion to wood, metal, glass and most other RV roof materials
  • RELIABLY DESIGNED — Once completely cured, this sealant is formulated to withstand rigors and vibrations of RV travel
  • CUSTOMIZATION — Available in Beige, Gray, Almond and White to match your RV's aesthetic
  • ALPHA — Alpha Systems provides a holistic lineup of tapes, sealants, adhesives and cleaners all formulated for your RV
ASIN B0858JZRSX
Brand Lippert Components
Model 5121 ALPHATHANE Self-Leveling Sealant for 5th Wheel RVs, Travel Trailers and Motorhomes
Item Weight 10.1 ounces
Manufacturer Alpha Systems
Special Features Do not use at temperatures below 40 degrees Fahrenheit, Ensure substrates are clean, dry, and free of oil and moisture, Exercise extra care during application to avoid air or debris entrapment, Once applied, do not handle, move, or pack for 1 hour, This product can be applied by a standard caulking gun
Item model number N512101TLCI
Product Dimensions 11.25 x 2 x 2 inches
Manufacturer Part Number 862215

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4.3 out of 5
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150 ratings | 62 reviews
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