---
product_id: 298927759
title: "3M Dual Lock SJ3550A 1\"×8ft Black, Reclosable Fastener Mounting Tape Interlocking Mushroom Shaped Strong Adhesive Hook Lock Sticky Tape Waterproof for Indoor and Outdoor, EZ Pass, Pedalboard, 1 Pack"
brand: "bulina"
price: "€ 47.16"
currency: EUR
in_stock: true
reviews_count: 8
category: "Bulina"
url: https://www.desertcart.nl/products/298927759-3m-dual-lock-sj3550a-1-8ft-black-reclosable-fastener-mounting
store_origin: NL
region: Netherlands
---

# Waterproof & UV resistant 250 interlocking stems/in² Withstands up to 200°F (93°C) 3M Dual Lock SJ3550A 1"×8ft Black, Reclosable Fastener Mounting Tape Interlocking Mushroom Shaped Strong Adhesive Hook Lock Sticky Tape Waterproof for Indoor and Outdoor, EZ Pass, Pedalboard, 1 Pack

**Brand:** bulina
**Price:** € 47.16
**Availability:** ✅ In Stock

## Summary

> 🔒 Lock it. Load it. Love it. The ultimate fastener for the fast-paced pro.

## Quick Answers

- **What is this?** 3M Dual Lock SJ3550A 1"×8ft Black, Reclosable Fastener Mounting Tape Interlocking Mushroom Shaped Strong Adhesive Hook Lock Sticky Tape Waterproof for Indoor and Outdoor, EZ Pass, Pedalboard, 1 Pack by bulina
- **How much does it cost?** € 47.16 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/298927759-3m-dual-lock-sj3550a-1-8ft-black-reclosable-fastener-mounting)

## Best For

- bulina enthusiasts

## Why This Product

- Trusted bulina brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-Weather Durability:** Engineered to resist heat, water, and UV rays, making it your go-to fastener for both indoor projects and rugged outdoor setups.
- • **Quick Strength Build-Up:** Achieves 50% hold in 20 minutes and full strength in 72 hours, so your projects stay secure fast without the wait.
- • **Versatile Surface Bonding:** Bonds seamlessly to metals, plastics, glass, wood, and more—no residue, no damage, just reliable adhesion every time.
- • **Effortless Removal & Reuse:** Peels off cleanly with a simple alcohol spray—no sticky mess, no surface damage, just smart fastening freedom.
- • **Unmatched Reclosable Strength:** Interlocking mushroom heads deliver a rock-solid hold that opens and closes effortlessly—perfect for repeat use without wear.

## Overview

3M Dual Lock SJ3550A is a premium 1"×8ft black reclosable fastener tape featuring 250 interlocking mushroom-shaped stems per square inch for superior strength. It bonds strongly to a wide range of surfaces including metals, plastics, glass, and wood, withstanding temperatures up to 200°F and offering waterproof, UV-resistant durability. Ideal for indoor and outdoor use, it provides a reusable, residue-free fastening solution perfect for professional and creative applications alike.

## Description

3M Dual Lock SJ3550A 1"×8ft Black, Reclosable Fastener Mounting Tape Interlocking Mushroom Shaped Strong Adhesive Hook Lock Sticky Tape Waterproof for Indoor and Outdoor, EZ Pass, Pedalboard, 1 Pack: desertcart.com: Industrial & Scientific

Review: Amazing product - Very strong, hold wells and can take a beating
Review: Love this stuff - Love this stuff. I use it in an industrial setting at work, and at home for random things. It sticks really well even in the heat and mess of a fabrication shop. I don't think I've ever had them unstick. The lock system is great and you need a lot less than you think you do. In fact if you use too much your parts become difficult to separate. Highly recommended if you need something like normal velcro but a lot stronger.

## Features

- FEATURE: Dual Lock Reclosable Fastener SJ3550 is the convenient alternative to traditional fastening methods, such as screws, nuts or bolts. It is designed to deliver a durable, reclosable fastening solution (which can be opened and closed multiple times) which bonds to a variety of substrates including metals and plastics such as acrylics, polycarbonate and ABS. Black, interlocking mushroom-shaped heads (250 stem density per square inch) provide strong, reliable and durable fastening that can be opened and closed multiple times.Features good temperature resistance of 200°F (93°C).
- APPLICATION: The Dual Lock Reclosable Fastener SJ3550 is versatile for a wide range of applications. It securely mounts and fastens items like whiteboards, power strips, under-cabinet lights, wall graphics, drone accessories, pedal boards, mirrors, and trade show kiosks. In homes and offices, it attaches wood blinds, soundproofing panels, office signs, exit lights, shower accessories, wreaths, and garlands. It's also ideal for RVs, where it can mount surveillance cameras, motion sensors, and other accessories. The fastener offers a durable, reclosable solution for various surfaces and environments.
- OUTDOOR USE: The Dual Lock Reclosable Fastener SJ3550 is also perfect for outdoor use, thanks to its UV resistance and waterproof properties, making it ideal for holiday decorations and other exterior applications. In automotive and marine environments, its high-temperature rating and waterproof features ensure reliability for mounting toll transponders, boat accessories, and motorcycle accessories. Whether for outdoor setups or vehicles, this fastener offers a secure, durable solution for a wide range of demanding applications.
- INSTALLATION AND REMOVAL: At room temperature, approximately 50% of the ultimate strength will be achieved after 20 minutes, 90% after 24 hours and 100% after 72 hours. Spraying alcohol on the tape then it is easy to peel off. Please clean the bonding surface and do not touch the stick layer before using, if anything touched the stick layer. It will peel away.
- BOND SMOOTH SURFACE: Bonds most painted metal and plastic without surface residue or abrading. Specially formulated synthetic adhesive bonds most paints and powder coats, as well as window materials such as glass, acrylic, and polycarbonate, stone and wood.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #2,458 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #20 in Hook & Loop Strips |
| Brand | Bulina |
| Color | Black |
| Customer Reviews | 4.7 out of 5 stars 696 Reviews |
| Material | Acrylic |
| Recommended Uses For Product | Attaching signs or nameplates, securing cables, bundling items, indoor and outdoor use, and in various environments and conditions Recommended Uses For Product Attaching signs or nameplates, securing cables, bundling items, indoor and outdoor use, and in various environments and conditions See more |
| Size | 1"×8ft |
| Style | 1 Pack |

## Product Details

- **Brand:** Bulina
- **Color:** Black
- **Material:** Acrylic
- **Size:** 1"×8ft
- **Style:** 1 Pack

## Images

![3M Dual Lock SJ3550A 1"×8ft Black, Reclosable Fastener Mounting Tape Interlocking Mushroom Shaped Strong Adhesive Hook Lock Sticky Tape Waterproof for Indoor and Outdoor, EZ Pass, Pedalboard, 1 Pack - Image 1](https://m.media-amazon.com/images/I/71ESMG+0O9L.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Because it's mated, is the actual usable length 1/2 of the length listed?**
A: Yes.  This product is all I use on my pedalboards.

**Q: is the length described refering to the actual mounting length? or in reality one gets half because you need to use two pieces of the tape?**
A: It is the actual length of the roll. There are different types of Dual Lock, allowing a person to mix and match types allowing for different amounts of adhesion between two devices.

As an example, you may want less adhesion for a removable TV remote control mounted to a wall, vs mounting a IP-TV permanently to a surface behind the display. This is doble by mixing and matching Dual Lock products.

**Q: Does the adhesive get soft when it warms? I want to use in a window to hang foil/foam insulation. Hook/loop adhesives tend to let go when sun hits it.**
A: It will if exposed to direct sunlight.

**Q: is thisw waterproof?**
A: Hard to say without knowing the intended application. The construction of the hook and loop is entirely plastic so yes there. The adhesive is very strong however I doubt it would withstand constant submersion. If were talking a bit of rain here or there. I'd bet it would last through a season, depending on the application surface. Make sure its clean and dry and kept dry for a few days until it is "set". Hope that helps

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing product
*by J***K on January 3, 2026*

Very strong, hold wells and can take a beating

### ⭐⭐⭐⭐⭐ Love this stuff
*by B***N on January 19, 2026*

Love this stuff. I use it in an industrial setting at work, and at home for random things. It sticks really well even in the heat and mess of a fabrication shop. I don't think I've ever had them unstick. The lock system is great and you need a lot less than you think you do. In fact if you use too much your parts become difficult to separate. Highly recommended if you need something like normal velcro but a lot stronger.

### ⭐⭐⭐⭐⭐ You won't be disappointed...
*by T***2 on February 2, 2026*

This is not the velcro you're typically familiar with. It works like velcro in concept but much better. A little bit of this goes a long way as it is very strong. The adhesive that's on the back side is extremely aggressive...in other words once you stick it, it's not coming off easily. I've used this to mount electronic equipment under shelves and to mount valances over window blinds and a few other things. It's solid. Works just like velcro but its not made of same material velcro is made of.

## Frequently Bought Together

- 3M Dual Lock SJ3550A 1"×8ft Black, Reclosable Fastener Mounting Tape Interlocking Mushroom Shaped Strong Adhesive Hook Lock Sticky Tape Waterproof for Indoor and Outdoor, 1 Pack
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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-25*