--- product_id: 92525113 title: "Dicor 551LSB-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, Black, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application" brand: "dicor" price: "$45.46" currency: USD in_stock: true reviews_count: 13 url: https://www.desertcart.us/products/92525113-dicor-551lsb-1-haps-free-non-leveling-lap-sealant-10 store_origin: US region: United States of America --- # HAPS-Free eco-safe formula Multi-surface adhesion 10.3 oz precision gel Dicor 551LSB-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, Black, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application **Brand:** dicor **Price:** $45.46 **Availability:** ✅ In Stock ## Summary > 🛡️ Seal smart, travel fearless — protect your RV like a pro! ## Quick Answers - **What is this?** Dicor 551LSB-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, Black, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application by dicor - **How much does it cost?** $45.46 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/92525113-dicor-551lsb-1-haps-free-non-leveling-lap-sealant-10) ## Best For - dicor enthusiasts ## Why This Product - Trusted dicor brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Friendly & Safe:** HAPS-Free formula ensures a safer work environment without compromising performance. - • **Pro-Grade Durability:** Trusted by RV pros and enthusiasts for long-lasting secondary sealing on edges and termination rails. - • **Leak-Proof Confidence:** Creates a flexible, watertight seal that protects your RV roof from leaks and damage. - • **Effortless Application:** Non-leveling gel formula stays put around screws, antennas, and tricky roof contours for perfect coverage. - • **Versatile Compatibility:** Seamlessly bonds with EPDM, TPO, PVC, aluminum, wood, vinyl, and more for all your sealing needs. ## Overview Dicor 551LSB-1 is a 10.3 oz black, HAPS-Free, non-leveling lap sealant designed for RV roofing and maintenance. It offers superior adhesion across multiple roofing membranes and surfaces, providing a flexible, watertight secondary seal that prevents leaks and withstands harsh weather. Ideal for aftermarket use, this eco-friendly silicone gel is the #1 RV sealant trusted by professionals and enthusiasts alike. ## Description The Dicor 551LSB-1 Lap Sealant for RV Roofing is a reliable solution for protecting your RV's roof. Its formula maintains the roof's appearance. This HAPS-free sealant meets industry requirements for a safer work environment and offers continuous sealing while remaining flexible. With its self-leveling properties, it effectively averts leaks and water damage. Choose the Dicor 551LSB-1 for lasting roof protection for your RV. Review: Works well on trailer roofs - This is a good product. We have a lot of client's in a vacation park. Their park model trailers take a beating all winter and then get cooked in the sun all summer. This is the best sealant I've found for tpo and rubber roof that trailers have. It is easy to apply and makes a nice solid patch. Review: The Only Lap Sealant I Use! - I have tried a couple of other brands of lap sealant, and the results were simply not good. I recently installed an additional solar panel on my RV. I used a cheaper brand to save a few dollars, huge mistake! So, I decided to order Dicor and used it to finish the project and cover the other brand. The Dicor flows smoothly, it adheres great and the leveling is superb. It makes the project looks so much more professional, and I trust that it will do its job to seal and protect from leaks, etc. No more trying other brands, Dicor is the only lap sealant I will use in the future. ## Features - SECURE SECONDARY SEAL: DICOR's HAPS-Free NON-Leveling Lap Sealant provides a secure secondary seal along your RV roof's edges and termination rails, ensuring protection against leaks and damage. - MULTI-MEMBRANE COMPATIBILITY: This lap sealant is compatible with various RV roofing materials, including EPDM, TPO, and PVC membranes, offering versatility for different roof types. - WIDE SURFACE ADHESION: With strong adhesion properties, it firmly bonds to surfaces such as aluminum, mortar, wood, vinyl, galvanized metal, fiberglass, and concrete, ensuring long-lasting sealing. - IDEAL FOR AFTERMARKET USE: Designed for aftermarket applications, this lap sealant is trusted by RV enthusiasts and professionals alike, making it a popular choice in RV stores. - HAPS-FREE FORMULA: DICOR's lap sealant features a HAPS-free formula, prioritizing safety and environmental considerations, ensuring a reliable and eco-friendly solution for RV roof maintenance. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B019QGSE4C | | Best Sellers Rank | #93 in Automotive ( See Top 100 in Automotive ) #1 in RV Sealants | | Brand Name | Dicor | | Color | Black | | Compatible Material | Metal | | Customer Reviews | 4.7 4.7 out of 5 stars (23,383) | | Global Trade Identification Number | 00677917009220 | | Included Components | Dicor Corporation 551LSB-1 Edpm Lap Seal 10.3 Oz. Tube | | Item Dimensions | 11.25 x 2 x 2 inches | | Item Form | Gel | | Item Type Name | Dicor Corporation 551LSB-1 Edpm Lap Seal 10.3 Oz. Tube | | Item Weight | 10.24 ounces | | Manufacturer | Dicor | | Material Type | Silicone | | Model | 551LSB-1 | | Number of Items | 1 | | Part Number | 551LSB-1 | | Style Name | Non-Leveling | | Surface Recommendation | Vent | | UPC | 677917009220 | | Unit Count | 1.0 Count | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** Dicor - **Item Weight:** 10.24 ounces - **Item dimensions L x W x H:** 11.25 x 2 x 2 inches - **Material:** Silicone - **Style:** Non-Leveling ## Images ![Dicor 551LSB-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, Black, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 1](https://m.media-amazon.com/images/I/71tx68yjZVL.jpg) ![Dicor 551LSB-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, Black, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 2](https://m.media-amazon.com/images/I/71o7IcSFQdL.jpg) ![Dicor 551LSB-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, Black, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 3](https://m.media-amazon.com/images/I/714wfzkZYDL.jpg) ![Dicor 551LSB-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, Black, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 4](https://m.media-amazon.com/images/I/81fQ858fmvL.jpg) ![Dicor 551LSB-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, Black, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 5](https://m.media-amazon.com/images/I/81uMLIo9lIL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works well on trailer roofs *by J***I on April 15, 2026* This is a good product. We have a lot of client's in a vacation park. Their park model trailers take a beating all winter and then get cooked in the sun all summer. This is the best sealant I've found for tpo and rubber roof that trailers have. It is easy to apply and makes a nice solid patch. ### ⭐⭐⭐⭐⭐ The Only Lap Sealant I Use! *by D***W on April 22, 2026* I have tried a couple of other brands of lap sealant, and the results were simply not good. I recently installed an additional solar panel on my RV. I used a cheaper brand to save a few dollars, huge mistake! So, I decided to order Dicor and used it to finish the project and cover the other brand. The Dicor flows smoothly, it adheres great and the leveling is superb. It makes the project looks so much more professional, and I trust that it will do its job to seal and protect from leaks, etc. No more trying other brands, Dicor is the only lap sealant I will use in the future. ### ⭐⭐⭐⭐⭐ Great product *by E***Y on March 27, 2026* Works excellent for rv roof. Levels nicely and creates a flexible water tight seal perfect for covering screws and going around objects like the antenna and satellite or anything else that would make using sealing tape a pain in the rear. Have used it many times and will continue to use it when needed. ## Frequently Bought Together - Dicor 551LSB-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, Black, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Dicor BT-1834-1 Butyl Seal Tape - 1/8" x 3/4" x 30' Repair Tape for RV, Trailer, Motorhome, Window, and Vent Sealing - Dicor 501LSW-1 Self-Leveling Lap Sealant, 4 Pack --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/92525113-dicor-551lsb-1-haps-free-non-leveling-lap-sealant-10](https://www.desertcart.us/products/92525113-dicor-551lsb-1-haps-free-non-leveling-lap-sealant-10) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-10*