---
product_id: 14992375
title: "Sashco 30623 Pre-Caulking Filler Rope Backer Rod 5/8-Inch x 50-Feet, Grey"
brand: "sashco"
price: "€ 31.16"
currency: EUR
in_stock: true
reviews_count: 13
url: https://www.desertcart.fi/products/14992375-sashco-30623-pre-caulking-filler-rope-backer-rod-5-8
store_origin: FI
region: Finland
---

# Water resistant 5/8" diameter 50-feet length Sashco 30623 Pre-Caulking Filler Rope Backer Rod 5/8-Inch x 50-Feet, Grey

**Brand:** sashco
**Price:** € 31.16
**Availability:** ✅ In Stock

## Summary

> Seal the Deal with Confidence! 🛠️

## Quick Answers

- **What is this?** Sashco 30623 Pre-Caulking Filler Rope Backer Rod 5/8-Inch x 50-Feet, Grey by sashco
- **How much does it cost?** € 31.16 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/14992375-sashco-30623-pre-caulking-filler-rope-backer-rod-5-8)

## Best For

- sashco enthusiasts

## Why This Product

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

## Key Features

- • **Cost Efficient:** Fills joints effectively, reducing caulk usage.
- • **Easy Installation:** Soft and pliable for effortless fitting into joints.
- • **Professional Quality:** Achieve seamless, long-lasting joints that impress.
- • **Material Compatibility:** Works flawlessly with all substrates and sealants.
- • **Water Repellent Design:** Closed cell structure keeps moisture at bay.

## Overview

The Sashco 30623 Pre-Caulking Filler Rope Backer Rod is a 5/8-inch diameter, 50-feet long grey polyurethane rod designed to create professional-grade caulking joints. Its closed cell design repels water, ensuring durability and protection against damage. Compliant with ASTM C 1330, Type C, this backer rod is easy to install and compatible with all substrates and sealants, making it an essential tool for any serious DIYer or professional contractor.

## Description

Sashco 30623 Pre-Caulking Filler Rope Backer Rod 5/8-Inch x 50-Feet, Grey

## Features

- Makes professional joints that last
- Helps fill in and insulate large caulk joints and allows the caulking to absorb more movement
- Closed cell design repels water to help protect the joint from damage
- Complies with ASTM C 1330, Type C
- Measures 5/8-inches diameter by 50-feet length
- Easy to fit - soft and pliable so it fits into the joint easily
- Water resistant - unlike open cell backer rod, it repels water to help protect the joint from damage
- Fills the joint so you use less caulk
- Fully compatible with all substrates and sealants

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | SASHCO |
| Part Number | 30623 |
| Item Weight | 0.2 ounces |
| Product Dimensions | 13 x 13 x 5 inches |
| Item model number | 30623 |
| Is Discontinued By Manufacturer | No |
| Size | 5/8" |
| Color | Grey |
| Material | Polyurethane |
| Item Package Quantity | 1 |
| Included Components | Building Materials & Ladders;Raw Building Materials;concretes |
| Batteries Required? | No |

## Images

![Sashco 30623 Pre-Caulking Filler Rope Backer Rod 5/8-Inch x 50-Feet, Grey - Image 1](https://m.media-amazon.com/images/I/716uciyptIL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Better than expected
  

*by P***7 on Reviewed in the United States on February 5, 2024*

Needed to fill some gaps letting air in. This product is cheap, easy to use, and WORKS!  Awesome.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Works perfectly
  

*by T***N on Reviewed in the United States on February 26, 2024*

I purchased the backer rod to fill cracks in my driveway before caulking them in.  It's a well-made backer rod and easy to use.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Backer rod
  

*by M***G on Reviewed in the United States on October 4, 2023*

Sure this product does work fine as backer rod.  I was trying to use it as filler into steel golf shafts to prevent vibration.  Unfortunately this product needs to be more light weight to use in golf clubs.

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**Shop now:** [https://www.desertcart.fi/products/14992375-sashco-30623-pre-caulking-filler-rope-backer-rod-5-8](https://www.desertcart.fi/products/14992375-sashco-30623-pre-caulking-filler-rope-backer-rod-5-8)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-28*