---
product_id: 139748118
title: "900 Moldable Silicone Putty - Grey"
brand: "e/fusing"
price: "€ 30.19"
currency: EUR
in_stock: null
reviews_count: 13
category: "E/Fusing"
url: https://www.desertcart.es/products/139748118-900-moldable-silicone-putty-grey
store_origin: ES
region: Spain
---

# Water-resistant & waterproof seal Heat-resistant, stays flexible 2.65 oz moldable silicone putty 900 Moldable Silicone Putty - Grey

**Brand:** e/fusing
**Price:** € 30.19
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Seal it, shape it, own it — the putty that powers your projects!

## Quick Answers

- **What is this?** 900 Moldable Silicone Putty - Grey by e/fusing
- **How much does it cost?** € 30.19 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/139748118-900-moldable-silicone-putty-grey)

## Best For

- e/fusing enthusiasts

## Why This Product

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

## Key Features

- • **Cost-Effective Bulk:** Generous 2.65 oz supply beats overpriced competitors, giving you more putty for less.
- • **Multi-Purpose Mastery:** From pipeline leaks to GoPro waterproofing, this putty adapts to your toughest fixes.
- • **Waterproof Confidence:** Creates a reliable water-resistant barrier—perfect for outdoor gear and electronics.
- • **Mold & Seal Like a Pro:** Easily shape and apply to pinhole leaks for instant, durable repairs.
- • **Heat-Resilient Flexibility:** Maintains consistency even under high temperatures—no drying or cracking.

## Overview

The 900 Moldable Silicone Putty is a versatile, heat-resistant, and waterproof silicone compound made in the USA. Weighing 2.65 ounces, it molds easily to seal leaks and reinforce repairs, offering a cost-effective and durable solution for industrial, electronic, and outdoor applications.

## Description

900 Moldable Silicone Putty - Gray: desertcart.com: Industrial & Scientific

Review: This works great for GoPro's! - I recently purchased a YoloTek GoPro Powerstick. That unit is supposed to come with a very small amount of their silicone rainproof putty to wrap around the wire connection on your GoPro in order to keep rain/water out. Unfortunately, they seem to be having some issues; as seen by many reviews, a lot of their Powerstick packaging doesn't in fact come with the rainproof putty like it advertises (which I believe has been proven to have been an honest mistake on their part, which they do attempt to make right with their customers once it's brought to their attention). And buying it separately is just ridiculous due to its high pricing (~$30.00 per box, last time I looked). This E/Fusing 900 here works phenomenally as a replacement. It doesn't dry up (even on a hot, Florida summer afternoon) and its consistency remains the same. It's very easy to work with and creating a functional seal around your GoPro wire connection(s) takes little effort. And, one of the best things? You get a significant amount of this stuff; more than I'll ever need for my multiple GoPro's (the photo of the roll in my hand is what was left after I used it to generously seal up one GoPro in two spots on the Powerstick). All at a price that equates to half of what YoloTek charges for a box of their rainproof putty (which they only supply a small amount compared to how much of this E/Fusing 900 that you get). This stuff has many different uses, but it has just knocked it out of the park for my purpose. The only cons that I've encountered so far: 1. If you're not familiar with how to successfully waterproof an electronic device (as opposed to making it water resistant), you can kill a GoPro or another device. Of course, this is entirely based upon the user and the E/Fusing 900 is not at fault for it. I just believe that it can give a sense of false security to those that look at it incorrectly. A great example to give you here is with my GoPro that you see in the photo that I uploaded. It's a GoPro 8 with a new battery door on it that allows for the USB power cord to be plugged in. This new battery door is not waterproof. Some are, and some aren't; mine isn't. Some users have killed their GoPro's by thinking that they've waterproofed the unit by applying the E/Fusing 900 (or in their case, the Yolotek silicone putty or something similar) like I have, which is not the case. It is simply water resistant. If submerged, water will enter the cracks of the battery door and kill the GoPro. Again, this ultimately is user error, but worth bringing to your attention if you're wanting to use it for the same purposes as I have. 2. After handling the YoloTek silicone putty that one of my friend's bought, it is easier to work with, but not by much. 3. The color might not be appealing to some people. This is where the clear YoloTek silicone putty can outshine the E/Fusing 900. I don't mind at all, personally. Especially since options appear to be so limited. Good luck with your projects, everybody!
Review: The Putty That Thinks It’s Play-Doh for Adults - This 900 Moldable Silicone Putty is basically Play-Doh’s serious, grown-up cousin—flexible, moldable, and ready to fix whatever you throw at it (or at least pretend to). It sticks, it seals, and it even handles heat like a champ—so you can patch up stuff without turning your house into a science experiment. Bonus: if you get bored, you can always sculpt a tiny masterpiece instead of fixing things. Multitasking! If you want a putty that’s as versatile as your questionable life choices, this one’s a solid pick.

## Features

- Made in USA
- Mold into pinhole leaks on pipelines to assist in leak sealing
- Use E/Fusing 140 or E/Fusing 330 to wrap and reinforce seal
- Package weight of the Product: 2.65 Ounces

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07RV5R33Y |
| Best Sellers Rank | #14,111 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #37 in Silicone Adhesives |
| Brand | E/FUSING |
| Color | Gray |
| Date First Available | May 14, 2019 |
| Item Form | Putty |
| Item Package Quantity | 1 |
| Item Volume | 2.5 Fluid Ounces |
| Item Weight | 1.6 ounces |
| Item model number | E/FUSING 900 |
| Manufacturer | Midsun Specialty Products |
| Material | Silicone |
| Package Dimensions | 5.31 x 4.61 x 1.46 inches |
| Package Information | Box |
| Special Feature | moldable and self-fusing |
| Specific Uses For Product | Repair |
| UPC | 764759609005 |
| Unit Count | 2.65 Ounce |
| Viscosity | Low |
| Viscosity Level | Low |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** E/FUSING
- **Item Form:** Putty
- **Material:** Silicone
- **Special Feature:** moldable and self-fusing
- **Specific Uses For Product:** Repair

## Images

![900 Moldable Silicone Putty - Grey - Image 1](https://m.media-amazon.com/images/I/51lrvCXdulL.jpg)

## Questions & Answers

**Q: Does it become hard once set? Wanting to use as a mother mold**
A: It never sets - it remains soft and pliable. I would use hydrocal for the mother mold or reinforced fiberglass with epoxy.

**Q: Does this cure flexible or rigid?**
A: This product does not cure at all. It remains pliable indefinitely

**Q: Does this putty maintain its shape once molded, like modeling clay, or does gravity cause it to melt back down?**
A: Yes and it was very easy to work with. it did not stick to you hands and you could mold it very easy.

**Q: Wrap around outdoor speaker wire (binding post connection) for additional waterproofing? Want something removable for winter storage of speakers.**
A: This is potentially messy for that application. Try using E/FUSING 112 to wrap wires to protect them from elements.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This works great for GoPro's!
*by J***. on October 19, 2021*

I recently purchased a YoloTek GoPro Powerstick. That unit is supposed to come with a very small amount of their silicone rainproof putty to wrap around the wire connection on your GoPro in order to keep rain/water out. Unfortunately, they seem to be having some issues; as seen by many reviews, a lot of their Powerstick packaging doesn't in fact come with the rainproof putty like it advertises (which I believe has been proven to have been an honest mistake on their part, which they do attempt to make right with their customers once it's brought to their attention). And buying it separately is just ridiculous due to its high pricing (~$30.00 per box, last time I looked). This E/Fusing 900 here works phenomenally as a replacement. It doesn't dry up (even on a hot, Florida summer afternoon) and its consistency remains the same. It's very easy to work with and creating a functional seal around your GoPro wire connection(s) takes little effort. And, one of the best things? You get a significant amount of this stuff; more than I'll ever need for my multiple GoPro's (the photo of the roll in my hand is what was left after I used it to generously seal up one GoPro in two spots on the Powerstick). All at a price that equates to half of what YoloTek charges for a box of their rainproof putty (which they only supply a small amount compared to how much of this E/Fusing 900 that you get). This stuff has many different uses, but it has just knocked it out of the park for my purpose. The only cons that I've encountered so far: 1. If you're not familiar with how to successfully waterproof an electronic device (as opposed to making it water resistant), you can kill a GoPro or another device. Of course, this is entirely based upon the user and the E/Fusing 900 is not at fault for it. I just believe that it can give a sense of false security to those that look at it incorrectly. A great example to give you here is with my GoPro that you see in the photo that I uploaded. It's a GoPro 8 with a new battery door on it that allows for the USB power cord to be plugged in. This new battery door is not waterproof. Some are, and some aren't; mine isn't. Some users have killed their GoPro's by thinking that they've waterproofed the unit by applying the E/Fusing 900 (or in their case, the Yolotek silicone putty or something similar) like I have, which is not the case. It is simply water resistant. If submerged, water will enter the cracks of the battery door and kill the GoPro. Again, this ultimately is user error, but worth bringing to your attention if you're wanting to use it for the same purposes as I have. 2. After handling the YoloTek silicone putty that one of my friend's bought, it is easier to work with, but not by much. 3. The color might not be appealing to some people. This is where the clear YoloTek silicone putty can outshine the E/Fusing 900. I don't mind at all, personally. Especially since options appear to be so limited. Good luck with your projects, everybody!

### ⭐⭐⭐⭐⭐ The Putty That Thinks It’s Play-Doh for Adults
*by D***T on October 21, 2025*

This 900 Moldable Silicone Putty is basically Play-Doh’s serious, grown-up cousin—flexible, moldable, and ready to fix whatever you throw at it (or at least pretend to). It sticks, it seals, and it even handles heat like a champ—so you can patch up stuff without turning your house into a science experiment. Bonus: if you get bored, you can always sculpt a tiny masterpiece instead of fixing things. Multitasking! If you want a putty that’s as versatile as your questionable life choices, this one’s a solid pick.

### ⭐⭐⭐⭐ Worked great, but no instructions
*by T***B on October 10, 2023*

I took off one star not because of a problem with the product itself, but rather with the fact that there were no instructions with it or online. It worked great. I needed to plug a small gap around the intake and exhaust PVC pipes for my furnace where they went through the outside of my basement wall. I couldn't use caulk on the underside of the pipes because of how close they were to the ground. It was easy to break off and roll pieces of this to the shape I wanted and them push it into place. It adhered fine. I would buy again.

## Frequently Bought Together

- 900 Moldable Silicone Putty - Grey
- Rectorseal 81880 1-Pound Duct Seal Compound Gray
- Zxfuture Pack of 20 White Seal Putty Waterproof Duct Seal Repair Sealing Clay, Quick Mending Mud for Drain Connection, Wall Hole, Air Conditioning Hole

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-02-25*