---
product_id: 15161823
title: "Dicor 551LST-1 HAPS-Free Non-Leveling Lap Sealant - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application"
brand: "dicor"
price: "$38.08"
currency: USD
in_stock: true
reviews_count: 13
category: "Dicor"
url: https://www.desertcart.us/products/15161823-dicor-551lst-1-haps-free-non-leveling-lap-sealant-10
store_origin: US
region: United States of America
---

# 100% waterproof seal UV sun-ray stabilized multi-surface adhesion Dicor 551LST-1 HAPS-Free Non-Leveling Lap Sealant - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application

**Brand:** dicor
**Price:** $38.08
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal smart, stay leak-free — the pro’s choice for RV roof perfection!

## Quick Answers

- **What is this?** Dicor 551LST-1 HAPS-Free Non-Leveling Lap Sealant - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application by dicor
- **How much does it cost?** $38.08 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/15161823-dicor-551lst-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

- • **Durable Flexibility:** Remains flexible over time, adapting to temperature changes without cracking or peeling for long-lasting protection.
- • **Sun-Resistant Style:** Tan color with UV stabilization ensures no discoloration, keeping your RV roof looking sleek and professional.
- • **Watertight Confidence:** Creates a flexible, watertight seal around vents, screws, and roof edges to protect your RV from leaks.
- • **Universal Compatibility:** Formulated for EPDM but bonds seamlessly with aluminum, vinyl, concrete, and more—versatility that fits every project.
- • **Easy Application, Pro Results:** Non-leveling formula spreads smoothly around complex shapes like antennas and pipes—no mess, no fuss.

## Overview

Dicor 551LST-1 HAPS-Free Non-Leveling Lap Sealant is a 10.3 oz tan synthetic rubber sealant designed for creating durable, waterproof seals on RV roofs and various surfaces. UV stabilized to prevent discoloration, it offers excellent adhesion to multiple materials including EPDM, aluminum, vinyl, and concrete. Its flexible, non-leveling formula ensures long-lasting protection around vents, screws, and roof edges, making it the #1 choice for RV maintenance and repair.

## Description

This sealant helps create a watertight seal along a roof's edge, air vents, vent pipes, and screw heads. Dicor Products Lap Sealant is a versatile sealant formulated for EPDM roofing but also compatible with most other roofing material, including Dicor DiFlex II, Tufflex, PVC, and PriTEK TPO roofing. It offers excellent adhesion to aluminum, mortar, wood, vinyl, galvanized metal, and concrete. Continuously seals and remains flexible. Color matched, our lap sealants are sun-ray stabilized to avoid discoloration and will not stain or discolor any material to which it is applied. The Dicor roofing Systems assures a watertight roof that is easy to maintain and saves energy through its heat reflecting characteristics.

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

- USE: This sealant helps create a watertight seal along a roof's edge, air vents, vent pipes, and screw heads
- COLOR: Tan hue for stylish and beautiful RV roof
- COMPATIBILITY: Formulated for EPDM roofing but also compatible with most other roofing material, including Dicor DiFlex II, Tufflex, PVC, and PriTEK TPO roofing
- LONG LASTING: sun-ray stabilized to avoid discoloration and spoiling and will not stain or discolor any material to which it is applied
- FEATURES: Offers excellent adhesion to aluminum, mortar, wood, vinyl, galvanized metal, and concrete; Continuously seals and remains flexible

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00HJ6Y0WM |
| Best Sellers Rank | #171 in Automotive ( See Top 100 in Automotive ) #1 in RV Sealants |
| Brand | Dicor |
| Brand Name | Dicor |
| Color | Tan |
| Compatible Material | Aluminum, Concrete, Metal, Rubber, Vinyl |
| Customer Reviews | 4.7 out of 5 stars 23,508 Reviews |
| Global Trade Identification Number | 00677917008001 |
| Included Components | Dicor Corporation 551LST-1 Edpm Lap Seal 10.3 Oz. Tube Tan |
| Item Dimensions | 11.5 x 0.6 x 0.2 inches |
| Item Form | Liquid |
| Item Type Name | Dicor Corporation 551LST-1 Edpm Lap Seal 10.3 Oz. Tube Tan |
| Item Weight | 9.6 ounces |
| Item dimensions L x W x H | 11.5 x 0.6 x 0.2 inches |
| Manufacturer | Dicor |
| Material | Synthetic Rubber |
| Material Type | Synthetic Rubber |
| Model | 551LST-1 |
| Number of Items | 1 |
| Part Number | 551LST-1 |
| Style | Non-Leveling |
| Style Name | Non-Leveling |
| Surface Recommendation | Roof,Vent |
| UPC | 677917008001 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Dicor
- **Item Weight:** 0.6 Pounds
- **Item dimensions L x W x H:** 11.5 x 0.6 x 0.2 inches
- **Material:** Synthetic Rubber
- **Style:** Non-Leveling

## Images

![Dicor 551LST-1 HAPS-Free Non-Leveling Lap Sealant - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 1](https://m.media-amazon.com/images/I/710gB8xoR4L.jpg)
![Dicor 551LST-1 HAPS-Free Non-Leveling Lap Sealant - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 2](https://m.media-amazon.com/images/I/71JcVKkFXdL.jpg)
![Dicor 551LST-1 HAPS-Free Non-Leveling Lap Sealant - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 3](https://m.media-amazon.com/images/I/71yhVdrTWYL.jpg)
![Dicor 551LST-1 HAPS-Free Non-Leveling Lap Sealant - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 4](https://m.media-amazon.com/images/I/81ev2ozYDnL.jpg)
![Dicor 551LST-1 HAPS-Free Non-Leveling Lap Sealant - 10.3 Oz, Tan, 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 551LST-1 HAPS-Free Non-Leveling Lap Sealant - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application
- Dicor 501LSW-1 Self-Leveling Lap Sealant, 4 Pack
- Dicor 351CSCL-1 HAPS-Free Cap Sealant - Clear for RV Window and Door Maintenance

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---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-18*