---
product_id: 389477386
title: "OOMOO 25-1A:1B Mix By Volume Tin Cure Silicone Rubber - Gallon Unit"
brand: "smooth-on"
price: "$111.45"
currency: USD
in_stock: false
reviews_count: 2
url: https://www.desertcart.ec/products/389477386-oomoo-25-1a-1b-mix-by-volume-tin-cure-silicone
store_origin: EC
region: Ecuador
---

# Low viscosity 1:1 mix ratio 15 min pot life OOMOO 25-1A:1B Mix By Volume Tin Cure Silicone Rubber - Gallon Unit

**Brand:** smooth-on
**Price:** $111.45
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Mold Your Imagination with Ease!

## Quick Answers

- **What is this?** OOMOO 25-1A:1B Mix By Volume Tin Cure Silicone Rubber - Gallon Unit by smooth-on
- **How much does it cost?** $111.45 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/389477386-oomoo-25-1a-1b-mix-by-volume-tin-cure-silicone)

## Best For

- smooth-on enthusiasts

## Why This Product

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

## Key Features

- • **Quick Turnaround:** Achieve your mold-making goals with a rapid 15-minute pot life.
- • **Effortless Mixing:** Experience a hassle-free 1:1 mix ratio—no scale needed!
- • **No Vacuuming Required:** Say goodbye to vacuum degassing—simplicity at its finest!
- • **User-Friendly Formula:** Designed for novices, this silicone rubber is easy to mix and pour.
- • **Perfect for Simple Molds:** Ideal for creating one or two-piece block molds with ease.

## Overview

OOMOO 25-1A:1B Mix By Volume Tin Cure Silicone Rubber is a user-friendly silicone compound designed for novice mold makers. With a convenient 1:1 mix ratio, low viscosity, and no need for vacuum degassing, it allows for quick and easy mold creation. The product features a 15-minute pot life and a 75-minute cure time, making it perfect for simple one or two-piece block molds.

## Description

No Vacuuming – No Scale – Easy To Use . . . OOMOO 25 is an easy to use tin cure silicone rubber compound that features a convenient one-to-one by volume mix ratio (no scale necessary). It has a low viscosity for easy mixing and pouring . . . vacuum degassing is not necessary. This product cures at room temperature with negligible shrinkage. OOMOO 25 has a 15-minute pot life and 75-minute cure time. For The Novice Mold Maker - OOMOO silicones do not have great tear strength. They are good for making simple one or two-piece block molds. If you require a high tear strength silicone, Mold Max silicones are recommended. OOMOO 25 is suitable for a variety of art-related and industrial applications including making one and two-piece block molds for sculpture and prototype reproduction, casting plaster, resins and wax. OOMOO silicones are also suitable for electrical potting and encapsulation applications.

## Features

- For The Novice Mold Maker - OOMOO silicones do not have great tear strength. They are good for making simple one or two-piece block molds. If you require a high tear strength silicone, Mold Max silicones are recommended.
- No Vacuuming – No Scale – Easy To Use . . . OOMOO 25 is an easy to use tin cure silicone rubber compound that features a convenient one-to-one by volume mix ratio (no scale necessary).
- It has a low viscosity for easy mixing and pouring . . . vacuum degassing is not necessary.
- OOMOO 25 has a 15-minute pot life and 75-minute cure time.

## Product Details

- **Brand:** Smooth-On
- **Specific Uses For Product:** Art, Casting, Industrial
- **Material:** Rubber, Silicone, Tin
- **Item Form:** Liquid
- **Special Feature:** Easy to Use, Room Temperature Cure

## Images

![OOMOO 25-1A:1B Mix By Volume Tin Cure Silicone Rubber - Gallon Unit - Image 1](https://m.media-amazon.com/images/I/61-dwiziJ7L.jpg)

## Customer Reviews

### ⭐ Past its shelf life
*by B***D on February 4, 2024*

I bought this to make several relatively simple molds. I have had good success with making molds with OOMO 30 and needed a larger quantity, OOMO 25 was as close as I could get to OOMO 30 in the gallon sizes in terms of properties (viscosity, etc..)Unfortunately when it arrived, the material in the blue bucket was congealed and would not pour. I started to suspect this hadn't been stored correctly or was past its shelf life, but was hoping it would still work so I spooned the correct volume out and mixed it thoroughly with the other part. When I poured it in the mold, even though I was well under the 15 minute pot life, it was so viscous that it would not flow into the mold details at all. In fact, it wouldn't even settle into a level surface! The top of my mold looked like a birthday cake.Obviously, this is totally useless for making a mold. I assume I got sold one that had sat in the warehouse for too long and was past its sell-by. I mixed it and used it literally the day it arrived, so it wasn't like I had kept it in a hot garage before trying to use it. Very frustrating because I wasted a lot of time!

### ⭐⭐ Incomplete order
*by O***3 on April 9, 2023*

I ordered both parts and only received part A.

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**Shop now:** [https://www.desertcart.ec/products/389477386-oomoo-25-1a-1b-mix-by-volume-tin-cure-silicone](https://www.desertcart.ec/products/389477386-oomoo-25-1a-1b-mix-by-volume-tin-cure-silicone)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-25*