---
product_id: 285203189
title: "551LSW-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application | Watertight seal along roof edge, air vents, pipes and screw heads, for EPDM plus DiFlex II, Tufflex, PVC, PriTEK TPO roofing"
brand: "dicor"
price: "¥8459"
currency: JPY
in_stock: true
reviews_count: 5
category: "Dicor"
url: https://www.desertcart.jp/products/285203189-551lsw-1-haps-free-non-leveling-lap-sealant-10-3
store_origin: JP
region: Japan
---

# 100% Waterproof Seal Sun-Ray Stabilized for UV Resistance Universal Adhesion on 7+ Materials 551LSW-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application | Watertight seal along roof edge, air vents, pipes and screw heads, for EPDM plus DiFlex II, Tufflex, PVC, PriTEK TPO roofing

**Brand:** dicor
**Price:** ¥8459
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal Smart, Stay Leak-Free — The Ultimate RV Roof Armor!

## Quick Answers

- **What is this?** 551LSW-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application | Watertight seal along roof edge, air vents, pipes and screw heads, for EPDM plus DiFlex II, Tufflex, PVC, PriTEK TPO roofing by dicor
- **How much does it cost?** ¥8459 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/285203189-551lsw-1-haps-free-non-leveling-lap-sealant-10-3)

## 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

- • **UV-Proof Durability:** Sun-ray stabilized formula prevents discoloration and degradation, maintaining pristine white finish season after season.
- • **Watertight Confidence:** Creates a flawless, leak-proof seal on RV roofs and vents to keep your adventures worry-free.
- • **Effortless Application:** Smooth, non-sag consistency makes precise sealing easy—no mess, no stress, just professional results every time.
- • **Flexible & Long-Lasting:** Non-leveling, flexible formula adapts to roof movement without cracking or peeling, ensuring continuous protection.
- • **Versatile Compatibility:** Engineered for EPDM but bonds seamlessly with PVC, TPO, vinyl, metal, wood, and concrete—one sealant to rule them all.

## Overview

The Dicor 551LSW-1 HAPS-Free Non-Leveling Lap Sealant is a premium 10.3 oz white sealant designed for creating watertight seals on RV roofs and related surfaces. It offers superior adhesion across multiple materials including EPDM, PVC, TPO, metal, and wood. Sun-ray stabilization ensures long-lasting UV resistance without discoloration, while its flexible, non-sag formula guarantees durable, crack-resistant protection. Trusted by thousands with a 4.7-star rating, this sealant is the go-to choice for professional-grade RV maintenance and repair.

## Description

Dicor Corporation Part #551LSW Non-Sag White Lap SealantbrbrHelps create watertight seal along a roofs edges#44; air vents#44; 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#44; including Dicor DiFlex IItrade; and BriTEKtrade; TPO roofing. It offers excellent adhesion to aluminum#44; mortar#44; wood#44; vinyl#44; galvanized metal and concrete. Package Quantity = 1

Review: As per description - Easy to use and does what it’s supposed to do
Review: Good quality - This is probably the universal standard for RV’s.I have used it a lot both sag & non sag.Works well when applied correctly.

## Features

- USE: This sealant helps create a watertight seal along a roof's edge, air vents, vent pipes, and screw heads
- COLOR: White 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 | B003YJLIW8 |
| Best Sellers Rank | #174,573 in Automotive ( See Top 100 in Automotive ) #45 in RV Cleaning, Storage & Maintenance |
| Brand | Dicor |
| Brand Name | Dicor |
| Color | White |
| Compatible Material | Rubber, Epdm, Dicor Diflex Ii, Tufflex, Pvc, Pritek Tpo |
| Customer Reviews | 4.7 out of 5 stars 4,421 Reviews |
| Global Trade Identification Number | 00677917000661 |
| Included Components | Dicor Corporation 551Lsw-12 Edpm Lap Seal 10.3 Oz. Tube Wht |
| Item Dimensions | 28.6 x 5.1 x 5.1 centimeters |
| Item Form | Liquid |
| Item Type Name | Dicor Corporation 551Lsw-12 Edpm Lap Seal 10.3 Oz. Tube Wht |
| Item Weight | 0.9 Pounds |
| Item dimensions L x W x H | 28.6 x 5.1 x 5.1 centimeters |
| Item weight | 0.9 Pounds |
| Manufacturer | Dicor |
| Material | Rubber |
| Material Type | Rubber |
| Model | 551LSW1 |
| Number of Items | 1 |
| Part Number | 551LSW-1 |
| Style | Non-Leveling |
| Style Name | Non-Leveling |
| Surface Recommendation | Roof |
| UPC | 677917000661 |
| Unit Count | 10.3 Milliliters |
| Water Resistance Level | Waterproof |
| Water resistance level | Waterproof |

## Product Details

- **Brand:** Dicor
- **Item dimensions L x W x H:** 28.6 x 5.1 x 5.1 centimeters
- **Item weight:** 0.9 Pounds
- **Material:** Rubber
- **Style:** Non-Leveling

## Images

![551LSW-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application | Watertight seal along roof edge, air vents, pipes and screw heads, for EPDM plus DiFlex II, Tufflex, PVC, PriTEK TPO roofing - Image 1](https://m.media-amazon.com/images/I/71XiBxLG7yL.jpg)

## Questions & Answers

**Q: What is the difference between the 501 and 551 versions of this sealant?**
A: Both are non-sag, but 501 is for horizontal surfaces and 551 is for vertical surfaces. Not sure what the difference is. The last letter indicates the color. (W=white)

**Q: can this caulk tube of dico r be reseal ed after opening, to be used at a later date or will it just dry out.?**
A: There is a product out there called Little Red Cap (https://www.amazon.com/Little-Red-Cap-Canister/dp/B076CRG6WN/ref=sr_1_3?crid=26RMJPU78XU9Y&keywords=little+red+cap+caulking+tube+covers&qid=1568080303&s=automotive&sprefix=little+red+cap+c%2Cautomotive%2C178&sr=1-3-catcorr). I have had tubes covered for many months and they don't dry out.  I have found this at local hardware stores as well.

**Q: can i use this to seal corner trim on rv or will it sag to much**
A: Non sagging like the label says.

**Q: Do you have it in black?**
A: Yes, we do.  The part number is 551LSB-1

## Customer Reviews

### ⭐⭐⭐⭐⭐ As per description
*by G***Y on 23 January 2026*

Easy to use and does what it’s supposed to do

### ⭐⭐⭐⭐⭐ Good quality
*by D***E on 14 January 2025*

This is probably the universal standard for RV’s.I have used it a lot both sag & non sag.Works well when applied correctly.

### ⭐⭐⭐⭐⭐ Great for RV sealing
*by R***N on 20 September 2024*

It's a great product that is recommended by most RV manufacturers for sealing or resealing most roofs. (Check your owners manual) Tip..I like to use it in conjunction with self leveling to contain it

## Frequently Bought Together

- Dicor 551LSW-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application
- Dicor 501LSW-1 Self-Leveling Lap Sealant, 4 Pack
- Dicor BT-1834-1 Butyl Seal Tape - 1/8" x 3/4" x 30' Repair Tape for RV, Trailer, Motorhome, Window, and Vent Sealing

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**Shop now:** [https://www.desertcart.jp/products/285203189-551lsw-1-haps-free-non-leveling-lap-sealant-10-3](https://www.desertcart.jp/products/285203189-551lsw-1-haps-free-non-leveling-lap-sealant-10-3)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-01*