---
product_id: 585758690
title: "3M Dual Lock SJ3550 1\"×6ft Black 2 Pack Reclosable Fastener Mounting Tape Interlocking Mushroom Shaped Strong Adhesive Hook Lock Sticky Tape for Indoor and Outdoor(DB251902)"
brand: "bulina"
price: "$80.95"
currency: USD
in_stock: true
reviews_count: 13
category: "Bulina"
url: https://www.desertcart.us/products/585758690-3m-dual-lock-sj3550-1-6ft-black-2-pack-reclosable
store_origin: US
region: United States of America
---

# 250 mushroom stems/in² for ultra-strong lock Durable black acrylic foam tape bonds diverse surfaces Withstands temps up to 200°F (93°C) 3M Dual Lock SJ3550 1"×6ft Black 2 Pack Reclosable Fastener Mounting Tape Interlocking Mushroom Shaped Strong Adhesive Hook Lock Sticky Tape for Indoor and Outdoor(DB251902)

**Brand:** bulina
**Price:** $80.95
**Availability:** ✅ In Stock

## Summary

> 🔗 Lock it, snap it, never lose it — the ultimate fastening upgrade!

## Quick Answers

- **What is this?** 3M Dual Lock SJ3550 1"×6ft Black 2 Pack Reclosable Fastener Mounting Tape Interlocking Mushroom Shaped Strong Adhesive Hook Lock Sticky Tape for Indoor and Outdoor(DB251902) by bulina
- **How much does it cost?** $80.95 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/585758690-3m-dual-lock-sj3550-1-6ft-black-2-pack-reclosable)

## 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

- • **Snap-Strong Security:** Interlocking mushroom heads deliver a satisfying audible snap, confirming a rock-solid hold every time.
- • **Clean Removal Formula:** Peels off easily with alcohol spray, leaving no residue or damage—upgrade your fastening without the mess.
- • **Reclosable & Reusable:** Open and close multiple times without losing grip—ideal for dynamic setups and quick adjustments.
- • **Heat & Weather Resistant:** Maintains strength in extreme conditions up to 200°F, ensuring reliability in any environment.
- • **Versatile Surface Bonding:** Bonds effortlessly to metals, plastics, glass, wood, and more—perfect for both indoor and outdoor projects.

## Overview

3M Dual Lock SJ3550 is a premium reclosable fastener tape featuring 250 interlocking mushroom-shaped stems per square inch for superior strength. Its black acrylic foam backing bonds securely to a wide range of surfaces including metals, plastics, glass, and wood. Designed for indoor and outdoor use, it withstands temperatures up to 200°F and offers easy, residue-free removal. Perfect for professionals seeking a durable, reusable alternative to screws and bolts.

## Description

3M Dual Lock SJ3550 1"×6ft Black 2 Pack Reclosable Fastener Mounting Tape Interlocking Mushroom Shaped Strong Adhesive Hook Lock Sticky Tape for Indoor and Outdoor(DB251902): desertcart.com: Industrial & Scientific

Review: Strong and reliable - Very strong locking Velcro, great for many uses cases.
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.
- HIGH QUALITY: 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. White, acrylic, conformable foam tape bonds well to a variety of substrates including metals and plastics such as acrylics, polycarbonate and ABS. Strong fastener secures with an audible snap, verifying closure. Features good temperature resistance of 200°F (93°C).
- APPLICATION: This SJ3550 dual lock mushroom clasp uses an acrylic adhesive to bond to a range of high surface energy materials, including some plastics, metals, glass and lacquered surfaces. It enables quick and easy installation without the need for mechanical mounting. After bonding, the interlocked mushroom stems can be fixed, spiral and rivet, but they can be easily separated and accessible to the fixed objects.
- 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 |
|---------------|-------|
| ASIN | B0BN68SC7T |
| Best Sellers Rank | #1,714 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #11 in Hook & Loop Strips |
| Brand Name | Bulina |
| Color | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (737) |
| Item Type Name | Dual Lock Reclosable Fastener |
| Item Weight | 3.52 ounces |
| Manufacturer | Bulina |
| Manufacturer Part Number | B1902 |
| Material Type | Acrylic |
| Model Number | B1902 |
| Mounting Type | Adhesive |
| Recommended Uses For Product | Mounting or fastening signs, labels, or other objects to walls, vehicles, or other surfaces, both indoors and outdoors |
| Size | 1"×6ft |
| Style | 2 Pack |
| Warranty Description | No Warranty |

## Product Details

- **Brand:** Bulina
- **Color:** Black
- **Material:** Acrylic
- **Size:** 1"×6ft
- **Style:** 2 Pack

## Images

![3M Dual Lock SJ3550 1"×6ft Black 2 Pack Reclosable Fastener Mounting Tape Interlocking Mushroom Shaped Strong Adhesive Hook Lock Sticky Tape for Indoor and Outdoor(DB251902) - Image 1](https://m.media-amazon.com/images/I/716CzL05AiL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Strong and reliable
*by D***Y on March 2, 2026*

Very strong locking Velcro, great for many uses cases.

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ No BS comment- real person.
*by M***. on March 9, 2026*

Used product to mount guitar pedals (metal to wood), strong adhesive. 2 years still holding strong. Rating is a 5 because it works . No BS comment. real person, no Bots.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-09*