---
product_id: 48104139
title: "Polycraft GP-3481F RTV Silicone Mould Making Rubber 2.2Kg Kit, Professional Grade Mould Making Material for Crafts, Resin Casting, Catalyst for Easy Mixing, Ideal for DIY Projects"
brand: "polycraft ( mb fibreglass )"
price: "A$252"
currency: AUD
in_stock: true
reviews_count: 8
category: "Polycraft ( Mb Fibreglass )"
url: https://www.desertcart.com.au/products/48104139-polycraft-gp-3481f-rtv-silicone-mould-making-rubber-2-2kg
store_origin: AU
region: Australia
---

# 40-60 min Working Time Easy Hand Mixing High Strength Silicone Polycraft GP-3481F RTV Silicone Mould Making Rubber 2.2Kg Kit, Professional Grade Mould Making Material for Crafts, Resin Casting, Catalyst for Easy Mixing, Ideal for DIY Projects

**Brand:** polycraft ( mb fibreglass )
**Price:** A$252
**Availability:** ✅ In Stock

## Summary

> 🎨 Mold Mastery Made Simple — Craft Like a Pro, Every Time!

## Quick Answers

- **What is this?** Polycraft GP-3481F RTV Silicone Mould Making Rubber 2.2Kg Kit, Professional Grade Mould Making Material for Crafts, Resin Casting, Catalyst for Easy Mixing, Ideal for DIY Projects by polycraft ( mb fibreglass )
- **How much does it cost?** A$252 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/48104139-polycraft-gp-3481f-rtv-silicone-mould-making-rubber-2-2kg)

## Best For

- polycraft ( mb fibreglass ) enthusiasts

## Why This Product

- Trusted polycraft ( mb fibreglass ) brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Demoulding:** Medium hardness and superior release properties ensure your complex replicas pop out cleanly every time.
- • **Mix Like a Pro, No Fuss:** Colour-coded components simplify hand mixing, eliminating guesswork and air bubbles for smooth results.
- • **Custom Consistency Control:** Adjust to thixotropic for vertical surfaces—tailor your silicone to fit any creative project’s demands.
- • **Versatile & Vacuum Optional:** Low viscosity formula works great without vacuum chambers, but vacuum use elevates mould quality.
- • **Precision Perfect Replication:** Capture every intricate detail with high tear resistance and 520% elongation for flawless moulds.

## Overview

Polycraft GP-3481F is a professional-grade, high strength RTV silicone mould making rubber kit designed for detailed resin casting and craft projects. Featuring easy hand mixing with colour-coded components, a 40-60 minute working time, and superior tear resistance, it delivers precise, durable moulds with excellent release properties. Its low viscosity allows use without vacuum chambers, while optional vacuum processing enhances quality. Customisable consistency and medium hardness make it ideal for complex, vertical, and intricate moulding tasks.

## Description

Product description Polycraft GP-3481F Silicone is a Condensation Cure Mould Making Rubber High strength silicone mould making rubber. Our silicone has been formulated for easy mixing by hand, with colour coded components (red or green) giving a visual aid to ensure mixing is adequate. The two components mix easily and because of the low viscosity most grades can be used without processing in a vacuum chamber. This silicone is suited for the detailed reproduction of figures, art objects and similar items. Outstanding release properties Long working time Medium Hardness High tear resistance High elasticity for easy removal of complex replica parts Can be made thixotropic (non flowable) for vertical surface replication Red silicone catalyst is by far the most popular catalyst to use with the GP-3481-F silicone, it gives great air release with longer working and demould times. Colour : Light Pink Mix Ratio : 100:10 Working Time : 40-60 Minutes De-Mould Time : 12-24 Hours Mixed Viscosity mPas : 18000 Hardness Shore A : 27 Tensile Strength Mpa : 3.0 Elongation @ Break % : 520 Tear Strength kN/m : 23 Linear Shrinkage & : 0.2-0.4 Downloadable Instruction Sheet on Invoice Base and catalyst use universal containers for various kit sizes and are supplied by weight, while the supplied containers may not be full, they will contain the correct amount of both base and hardener according to the listing. At point of packaging and dispatch lids may be taped to prevent damage or spillage during transportation. Legal Disclaimer Unfortunately we are unable to ship this item to, Isle of Man, Channel Islands or any Scottish Islands. Orders placed for these addresses will be cancelled and refunded due to carrier restrictions.

Review: Excellent product - I’ve used other silicone rubber mould kits, this surpasses all previous kits by a long way. Easy to mix, once set the mould holds incredible detail, is very robust and excellent release capabilities. I bought this for producing detailed dioramas and have not been disappointed. It’s an incredible product. Remember to order sufficient for your use and mix by hand to prevent air bubbles as per instructions state. Simple easy to mix.
Review: Fantastic mould making rubber. - I have used a fair amount of this rubber over the years and its a great product. Polycraft are my go to for anything when it comes to mould making and casting. I recommend that you use a vacuum chamber to remove air bubbles when using it to ensure you get the best possible results. I have used it both with and with out a vacuum and the results are like night and day. I would never go back after seeing how much better my moulds came out when using a vacuum.

## Features

- High Strength Silicone Mould Making Rubber: Engineered for exceptional durability, our silicone offers high strength for precise replication of intricate details in figures, art objects, and more.
- Easy Mixing Formula: Designed for effortless hand mixing, our silicone features colour-coded components (red or green) for visual guidance, ensuring thorough mixing for optimal results.
- Versatile Application: With low viscosity, our silicone can be conveniently used without the need for processing in a vacuum chamber, making it suitable for a wide range of projects.
- Superior Performance: Boasting outstanding release properties, medium hardness, high tear resistance, and high elasticity, our silicone facilitates the easy removal of complex replica parts with precision.
- Customisable Consistency: Our silicone can be adjusted to be thixotropic (non-flowable) for vertical surface replication, providing versatility to accommodate various project needs and requirements.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0033G8M30 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 585,519 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 1,790 in Sculpting Moulding & Casting |
| Colour | red |
| Customer Reviews | 4.6 4.6 out of 5 stars (111) |
| Date First Available | 7 April 2009 |
| Item Package Quantity | 1 |
| Item model number | 2079af91-d930-44f1-8ed5-c330f72e288b |
| Manufacturer | Polycraft ( MB Fibreglass ) |
| Material | Silicone |
| Special Features | Superior Performance, Customisable Consistency |
| Specific uses | Mould |

## Product Details

- **Brand:** Polycraft ( MB Fibreglass )
- **Item form:** Liquid
- **Material:** Silicone
- **Special feature:** Superior Performance, Customisable Consistency
- **Specific uses for product:** Mould

## Images

![Polycraft GP-3481F RTV Silicone Mould Making Rubber 2.2Kg Kit, Professional Grade Mould Making Material for Crafts, Resin Casting, Catalyst for Easy Mixing, Ideal for DIY Projects - Image 1](https://m.media-amazon.com/images/I/71e1hXmh+lL.jpg)

## Questions & Answers

**Q: Does this product work well as a mould for large epoxy resin projects?**
A: It will have a limited amount of castings before the epoxy would damage the mould,  with release agent it will extent the life slightly but ultimately the epoxy will still only allow for a short life span.

**Q: Do I need to use the silicone differently if making a candle mould for soy candles? Does the silicone need heating and if so, to what temperature?**
A: this can be used for candle making with little issue.  If the silicone mould is cold and you pour hot wax you will mostly end up with a hazy finish, this is where you would benefit from gently warming the mould so you can obtain the best finish on the surface.

**Q: Final question, would this be suitable for moulding intricate concrete casts backed up by a fibreglass surround?**
A: You can use the GP-3481 for short run moulds however the concrete will degrade the silicone, you could look at a silicone designed for concrete castings such as the S-30 or a polyurethane rubber such as the Polytek 74-45

**Q: Can you use this stuf for making garden pots**
A: Hi, This rubber is primarily designed for mould making and will likely not suit your use.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent product
*by A***R on 31 July 2020*

I’ve used other silicone rubber mould kits, this surpasses all previous kits by a long way. Easy to mix, once set the mould holds incredible detail, is very robust and excellent release capabilities. I bought this for producing detailed dioramas and have not been disappointed. It’s an incredible product. Remember to order sufficient for your use and mix by hand to prevent air bubbles as per instructions state. Simple easy to mix.

### ⭐⭐⭐⭐⭐ Fantastic mould making rubber.
*by P***N on 10 June 2020*

I have used a fair amount of this rubber over the years and its a great product. Polycraft are my go to for anything when it comes to mould making and casting. I recommend that you use a vacuum chamber to remove air bubbles when using it to ensure you get the best possible results. I have used it both with and with out a vacuum and the results are like night and day. I would never go back after seeing how much better my moulds came out when using a vacuum.

### ⭐⭐⭐⭐⭐ Good stuff!
*by T***Y on 26 May 2021*

My first attempt. Was really pleased how it came out with so much detail. The only thing that bugged me, was trying to measure the gardener,as it didn't pour out of the bottle very well, so got into a bit of a mess,and obviously wasted some. But apart from that, I'm going to be ordering more.

## Frequently Bought Together

- Polycraft GP-3481F RTV Silicone Mould Making Rubber 2.2Kg Kit, Professional Grade Mould Making Material for Crafts, Resin Casting, Catalyst for Easy Mixing, Ideal for DIY Projects
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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-05*