---
product_id: 334455983
title: "M-D Building Products 71551 Backer Rod"
brand: "m-d building products"
price: "27681 kr"
currency: ISK
in_stock: true
reviews_count: 5
category: "M D Building Products"
url: https://www.desertcart.is/products/334455983-m-d-building-products-71551-backer-rod
store_origin: IS
region: Iceland
---

# 1/2 inch perfect diameter 20 feet length for extended use Acrylic silicone material M-D Building Products 71551 Backer Rod

**Brand:** m-d building products
**Price:** 27681 kr
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal the deal or post with precision—pro quality, DIY savvy!

## Quick Answers

- **What is this?** M-D Building Products 71551 Backer Rod by m-d building products
- **How much does it cost?** 27681 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/334455983-m-d-building-products-71551-backer-rod)

## Best For

- m-d building products enthusiasts

## Why This Product

- Trusted m-d building products brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable & Lightweight:** Crafted from resilient acrylic silicone for long-lasting performance without added bulk.
- • **DIY Pro-Level Solution:** Transforms ordinary sealing or ear posting tasks into expert-level results with simple tape wrapping.
- • **Trusted & Highly Rated:** 4.6-star rating from thousands of users confirms reliability and satisfaction.
- • **Versatile 20-Foot Roll:** Generous length provides exceptional value for multiple projects or extended use.
- • **Precision Fit, Every Time:** Ideal 1/2 inch diameter ensures a snug, professional-grade seal or ear post core.

## Overview

The M-D Building Products 71551 Backer Rod is a 1/2 inch diameter, 20-foot long acrylic silicone foam rod designed for sealing concrete gaps and innovative DIY uses like Doberman ear posting. Lightweight yet durable, it offers professional-grade performance and exceptional value, backed by a strong 4.6-star user rating.

## Description

M-D Building Products 71551 Backer Rod

Review: Cost is too much.. Similar products are available in lowest prices..
Review: Though intended for sealing concrete gaps, this M-D Foam Backer Rod is an absolute game-changer for Doberman owners using DIY methods for ear posting. ​Perfect Density & Size: The 1/2 inch size and density are ideal for creating a stable, lightweight, and comfortable post core that is custom-cut to fit the ear canal perfectly. ​How to Use: The key to success is modification! It worked perfectly when wrapped in duct tape (or Zonas tape) to give it a firm, smooth exterior. This combination creates a far superior post than many specialized materials. ​Value: With 20 feet of material, this set offers incredible value, providing enough post material to last through the entire posting process for one or more puppies. ​If you are posting Doberman, Great Dane, or Boxer ears, forget the expensive custom kits—this backer rod, wrapped in tape, is the professional-level core you need. Highly, highly recommend!

## Features

- Item Weight: 1.15 lb
- Country of Origin: China
- Color: NULL
- Brand name: M-D Building Products

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00C1TGKZW |
| Best Sellers Rank | #72,287 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #147 in Raw Building Materials |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,743) |
| Date First Available | 20 April 2013 |
| Item model number | MD Building - 71551 |
| Manufacturer | M-D Building Products |
| Material type | Acrylic Silicone |
| Part number | 4962239 |
| Product Dimensions | 33.02 x 25.4 x 25.4 cm; 0.28 g |

## Product Details

- **Brand:** M-D Building Products
- **Colour:** Grey
- **Item form:** Foam
- **Item weight:** 0.01 Ounces
- **Maximum gap fill:** 0.5 Inches

## Images

![M-D Building Products 71551 Backer Rod - Image 1](https://m.media-amazon.com/images/I/61UnawlcwQL.jpg)
![M-D Building Products 71551 Backer Rod - Image 2](https://m.media-amazon.com/images/I/81zeuR+Nj2L.jpg)
![M-D Building Products 71551 Backer Rod - Image 3](https://m.media-amazon.com/images/I/818J6gOM3ZL.jpg)
![M-D Building Products 71551 Backer Rod - Image 4](https://m.media-amazon.com/images/I/81Py1S2524L.jpg)
![M-D Building Products 71551 Backer Rod - Image 5](https://m.media-amazon.com/images/I/81-xBTntOuL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is it safe to use near hot water baseboard radiators? I want to use it behind radiator cover as a temporary fix for a cold draft.**
A: I suspect it would be safe if between the wall and the top cover of the baseboard, assuming you have standard baseboard covers like mine -- which never get super hot. It's foam, and will likely melt if too close to a heat source. To be on the safe side, I'd suggest first contacting the company directly.

**Q: Can you use barge glue and plastidip**
A: Call the manufacturer

**Q: I live in an apartment and i feel a draft coming through the cracks of my window would this help? Im trying to avoid using weather tape**
A: I purchased the medium backer rod and they are 1/2" thick. I think the one I purchased would be too thick to insert into the crack of your windows.  Maybe there is a smaller version that would work for you.

**Q: What caulking do u need for this ?**
A: I did use caulk as it was used to support a garage door seal as the bottom of the door.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by R***I on 23 November 2018*

Cost is too much.. Similar products are available in lowest prices..

### ⭐⭐⭐⭐⭐ Review
*by T***D on 15 November 2025*

Though intended for sealing concrete gaps, this M-D Foam Backer Rod is an absolute game-changer for Doberman owners using DIY methods for ear posting. ​Perfect Density & Size: The 1/2 inch size and density are ideal for creating a stable, lightweight, and comfortable post core that is custom-cut to fit the ear canal perfectly. ​How to Use: The key to success is modification! It worked perfectly when wrapped in duct tape (or Zonas tape) to give it a firm, smooth exterior. This combination creates a far superior post than many specialized materials. ​Value: With 20 feet of material, this set offers incredible value, providing enough post material to last through the entire posting process for one or more puppies. ​If you are posting Doberman, Great Dane, or Boxer ears, forget the expensive custom kits—this backer rod, wrapped in tape, is the professional-level core you need. Highly, highly recommend!

### ⭐⭐⭐⭐⭐ Review
*by N***D on 24 January 2025*

closed in a screened deck and made a glassed in sunroom. Used backer rod to fill in the gaps between deck boards. I'm relatively sure the rod doesn't have a large R value, but it stopped the wind from blowing through the floor. It did make it possible to heat the room with a mini-split (which is not overloaded). It has kept the sunroom quite comfortable during winter (temps down to 8F). If it works as well in the summer heat, I'll give it high marks as an insulator.

## Frequently Bought Together

- M-D Building Products - Versatile Gray Foam Backer Rod - Set 1/2in x 250ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71551)
- M-D Building Products - Versatile Gray Foam Backer Rod - Set 3/8in x 350ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71550)
- zzhxkjhky 3/4' Diameter x 80' Length Backer Rod Caulk Saver Foam Backer Rod for Gaps and Joints Backing Concrete Filler

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-26*