Browse Products by Market

Browse Products by Technology

Products

Brands

Formulations

Documents

Experts

Silpak, Inc., established in 1984, is a leading industrial manufacturer and supplier of liquid rubber and liquid plastic polymer systems used in a variety of mold making and casting applications—The choice of many industry professionals, artists and hobbyist.

From performance rubber molding compounds—Latex, Silicone and Urethane RTV—to durable casting and tooling resins—Polyurethane, Epoxy and Polyester, Silpak continues to provide a unique service of innovative, quality products coupled with exceptional technical support.

If you have an application for any of our materials, and to save you valuable time, money and possible hours of frustration, contact our friendly and knowledgeable Technical Support Team to discuss your project or visit one of our Southern California Stores—North Hollywood or Pomona. We look forward to your questions and projects.

Privacy

Terms & Conditions

Terms of Sale

Cookie Policy

Silpak RU-491 are two-component, high performance, 100% solids Urethane Elastomers developed for their toughness and ease of processing. Applications include automotive and concrete tooling, rapid prototyping, Special FX, and any application where high resiliency, durability, and a firm rubber are required.

Silpak RU-491

Silpak RU-430 is a liquid, two-component, 100% solids Urethane Elastomer RTV that is easy to process. This system is designed with high elongation properties with good tear resistance and offers excellent library shelf-life. Use for making molds or rubber parts. Molds are used to cast concrete, wax, and plaster parts. **Use RU-430 C softening agent to reduce hardness.

Silpak RU-430

Silpak RU-435TH is a two-component, 100% solids Urethane Elastomer RTV that becomes thixotropic within minutes for creating thin, brush-on bladder molds within hours. Once cured, this urethane RTV provides a strong, durable mold with excellent tear strength. Use to create thin, flexible molds for easier de-molding or use to cut mold cost through minimizing material usage. Applications include mold making for the art, architectural, and foundry industries. Note: A Mother Mold, usually made of plaster, fiberglass or Trowel-On 60 (Thixotropic Plastic), is used to help support thin bladder mold.

Silpak RU-435TH

Silpak RU-455 is a liquid, two-component, 100% solids Urethane Elastomer RTV that is easily processed. This system provides a firm, semi-flexible, durable and abrasion resistant rubber compound. Use for creating molds, especially large molds where dimensional stability is required to avert distortion, and rubber parts. Molds are used to cast concrete, wax, and plaster parts. Also makes molds that are compatible for casting Silicone Platinum RTV.

Silpak RU-455

Silpak RU-470 is a liquid, two-component, 100% solids Urethane Elastomer RTV that is easily processed. This system provides a firm, semi-flexible, durable and abrasion resistant rubber compound. Used for a variety of applications including molds, concrete texture stamps and form liners, and rubber parts. Molds are used to cast concrete, wax, and plaster parts.

Silpak RU-470

Silpak RU-440 is a liquid, two-component, 100% solids Urethane Elastomer RTV that is easy to process. This system is offers good strength properties with excellent library shelf-life. Use to make molds or rubber parts. Molds are used to cast concrete, wax, and plaster parts.

Silpak RU-440

Silpak RU-280 is a two-component, semi-flexible urethane elastomer that is easy to process. Applications include automotive, tooling, architectural flexible moldings, prototype, Special FX, coatings and any application where rapid cure, high resiliency, firm rubber part is required. Parts can be easily stained with either oil or water based paints.

Silpak RU-280

Silpak RU-448 is a two-component, 100% solids Urethane Elastomer RTV that is easily processed. This system provides semi-flexible, abrasion resistant rubber compound with good elongation for easier demolding. Use for creating molds and rubber parts, especially large molds where dimensional stability is required to avert distortion. Molds are used to cast cement, wax, and plaster parts.

Silpak RU-448

Silpak RU-365 is a liquid, two-component, 100% solid Urethane RTV Elastomer that provides firm rubber part with excellent tear strength and abrasion resistance. Its simple 1 to 1 mix ratio and low viscosity allows for easy processing. This firm, yet flexible, urethane RTV is used for texture and concrete stamp pads, firm rubber molds and parts, concrete form liners, prototype rubber parts or any application where a firm rubber part is required.

Silpak RU-365

Silpak

Silpak, Inc., established in 1984, is a leading industrial manufacturer and supplier of liquid rubber and liquid plastic polymer systems used in a variety of mold making and casting applications—The c

Silpak - Liquid Rubber - Liquid Plastic - Mold Making - Casting

Website

RU-435TH Technical Data Sheet

RU-435TH Technical Data Sheet - Silpak - Knowde

Job Title

Shipping Terms

Name

and the data associated with it — permanently.

This is a Premium Feature

Changes to filters have not been applied.

Discard changes?

{userCompanyName} notice

In order to join {userCompanyName} on Knowde, you must use your business email address.

Business already on Knowde

{userCompanyName} requires all users on {companyName} to register with their business email address to ensure confidentiality and security.

{userCompanyName} requires registering your business email address

There's only a little ways to go.

Creating an account is free and the only way to directly download documents, order samples, request quotes and use direct messaging.

Quit Sign Up?

Tell us about {userCompanyName}

from concierge@knowde.com

Click the link in the email, or enter the 6-digit code

Verification email sent

Since you’re using a personal email address, we require proof to verify the information you have provided.

Please verify your account

Please go back and enter in an email address that is directly associated with a business.

Knowde is built for businesses

Also, using a personal email for creating your {companyName} account may require additional verification of your company details.

We recommend signing up with a work email address to get faster responses, especially when requesting samples, documents, and more.

Please enter your business email address below.  We’ll send you a confirmation code to quickly verify.

Enter your business email

{companyName} uses Knowde for account management so you can manage all of your sample requests, RFQs, orders and more in one place.

Knowde is for businesses, you may have a hard time receiving responses to your requests if you use a personal email address.

to {email}

We sent an email to {email}

Please click the link to reset your password

Check your email

Create a new password

Password expired

Sign in to {companyName}

Enter a new secure password

Change your password

Enter the email address associated with your account

Reset your password

Enter your password for

Use your Knowde password to sign in:

Please provide additional information to help us verify your company.

Terms and Conditions

Compare multiple products at once and find the best fit for your project needs.

Why is this important?

Enter your password

Unlock your account

Knowde is the world’s biggest marketplace to search for ingredients, polymers, and chemistry. You can:

Welcome to Knowde

View All Products

Cart

Please fix the following before proceeding to payment

An order receipt has been emailed to {email}

Order

This feature is currently unavailable at this screen size.

Payment

Shipping

Checkout

KEEP IN MIND

You will lose any existing chat history by starting a new chat.

Start a new chat?

Compare Products

This document is restricted content.

If you believe you should have permission to this document, please request access.

Restricted Access

It only takes 60 seconds to create an account.

Available {documentType} documents for this product ({counter})

Describe Documents You’d Like to Request

Invalid job title

That’s not the reaction we were expecting.

Page not found - Store for chemicals, polymers and ingredients

Internal Server Error - Store for chemicals, polymers and ingredients

Unexpected error occurred. Please contact us.

Client Side Exception - Store for chemicals, polymers and ingredients

Show products with

Filters

Featured Products

Flavor & Taste Explorer

Flavor Families

Enter your inquiry here, include as much detail as you’re able. *

To submit an inquiry to {companyName}, please fill out the form below and click Submit. They will get back to you as soon as they’re able.

Home Page

Request samples, documents, and quotes directly from suppliers

{companyName} experts - Knowde

Knowde is the first marketplace for chemicals, polymers and ingredients. Our leading-edge digital capabilities connect thousands of suppliers and customers every day.

Chemicals Marketplace - ingredients & raw materials - Knowde

Learn how to take full advantage of the free to use tools that you have unlocked.

Explore the capabilities of the platform and get immediate assistance for your needs with one of our experts.

Schedule a Demo

You’ll meet with Kiana from our Knowde Marketplace Team

Explore the capabilities of the platform and get immediate assistance for your needs.

Learn how you can make the most of the free tools now available to you.

Explore the capabilities of the platform with our dedicated team.

Weekly Webinar

See which others might better fit your needs.

This is just one of {allProducts} products on Knowde.

BROWSE BY

Knowde for Suppliers

Most popular categories

Gain instant access to our marketplace of over 250,000 chemicals, ingredients and polymers from 8,000 suppliers. Browse, search, and filter to quickly compare products, find information, request documents, order samples, and get quotes directly from suppliers.

Search and filter over 250,000 chemicals, ingredients and polymers, access documents and download starter formulations. Interact with over 8,000 suppliers whose representatives are ready to help. Sign up for a free Knowde Marketplace account today.

Create a free account to gain instant access to our marketplace of over 250,000 products and their documents.

Get new products to market faster with a free Knowde Marketplace account

The fastest way to find the right raw materials for your products

Want to explore more products?

Popular {companyName} Products

Start Order

Get a Quote

{price} each for {name}

1 of {brandProductsCount} products in this brand

This will be used for any follow-up questions so we can best meet your needs

Please fill out the form below to help {companyName} prepare your quote

Your request has been sent to {companyName}

This information will help us get you the right materials.

All Categories

{numberOfResults, plural, one {Brand} other {Brands}}

{numberOfResults, plural, one {Product} other {Products}}

Search Tips

{charactersCounter}/{limitCharacters} Characters

Visit

Your account has been verified. You now have access to the full power of {companyName}

The quantity your business will require annually, if the sample product suits your project's needs.