Liquid Injection Molding from ETI

With our 30+ years of industry experience, Elastomer Technologies, Inc. (ETI) is a solutions-oriented provider for liquid injection molding. Our large facility houses energy-efficient, 50- and 100-ton injection molding presses equipped with easy setup features and automation options for lights-out production. This gives us the versatility to efficiently manage projects that involve lots as small as 1,000 units to those with quantities of one million or more. We offer ISO Class 8 clean room molding for risk-sensitive products and are capable of co-molding two materials to create a fully integrated part in one single operation.

Industry-Leading Manufacturers For Liquid Injection Molding

The experts at Elastomer Technologies lead the industry in molding accurate, repeatable, tight tolerance geometry in silicone rubber. Our all-electric molding equipment is energy efficient and has easy set-up options developed to optimize this process. ETI runs lights out on products, minimizing the cost impact of labor by utilizing automation when possible.

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Liquid Injection Molding and Transfer Molding Class 100,000 Clean Room
Liquid Injection Molding and Transfer Molding Class 100,000 Clean Room
Liquid Injection Molding
Liquid Injection Molding

Additional details regarding our liquid injection molding capabilities:

  • Lights out round the clock molding
  • Versatile low and high annual volume runs of parts
  • 100% process verification and validation
  • Design and material selection assistance for injection molding prototypes

Our Approach to the Liquid Injection Molding Process

The liquid injection molding process involves pumping a metered dose of a pressurized compound into a heated mold. We use liquid silicone rubber (LSR) to mold parts that are flexible, durable, biocompatible, and maintain their physical properties in temperature extremes. Our proprietary processes also allow us to use high consistency rubber (HCR) for silicone molding applications, and the use of cold deck systems feature a material delivery configuration engineered to produce parts with nearly zero waste to save on material costs.

Our intelligent and creative approach to liquid injection molding lends itself well to the production of parts that require a high degree of accuracy. Our robust capabilities allow us to produce close tolerance parts at remarkably fast cycle times. Factors such as precision built tooling and tight control over the shot size allow us to achieve outstanding accuracy and repeatability on parts with complex geometries and varying wall thicknesses. With 100% process verification and validation, we guarantee that each part conforms to quality and traceability standards.

Click here to learn more about our liquid injection molding process! 

Molding Your Parts & Protoypes with ETI

At ETI, we are much more than just a source for liquid injection molded parts — we are your manufacturing partner. By answering a few simple questions, we can transform your idea into a working part optimized for functionality and manufacturability. Our proprietary "Project Forecaster" analysis takes all of the variables, such as function, environment, and physical requirements to deliver a smart solution that meets your cost, quality and timeline expectations.

When critical fit and function parts are required with tight tolerances, thin wall sections, or other problematic geometry, choose liquid injection molding and Elastomer Technologies.

Liquid Injection Molding Specifications

Mold Process Type
Liquid Injection Molding (LIM)
The process that involves an integrated system for proportioning, mixing, and dispensing two component liquid resin formulations and directly injecting the resultant mix into a mold which is clamped under pressure.
Silicone (Both two-part liquid silicone &
high consistency silicone compounds)
Supplier provided materials
Press Sizes
(3) 50-ton machines & (1) 100-ton machine
Clamping Force
50 tons & 100 tons
Tool Size (Between Tie Bars)
From 14 in. to 18.5 in.
Shot Size
The maximum weight of plastic that can be displaced or injected by a single injection stroke. 
54 grams
Shrinkage Allowance
The dimensional allowance which must be made in molds to compensate for shrinkage of the material on cooling or during the debinding operation.
Varies in parts and materials
Number of Cavities
The number of cavities in the mold used to produce multiple products in one molding cycle.
Additional Services
Cold Deck Systems
Lead Time (Cavity & Core Plates)
4 to 10 weeks
Lead Time (Complex Tool - Full Mold)
8 to 15 weeks
Production Volume
1000 parts min
No maximum
Industry Standards
ASTM - American Society for Testing and Materials
ISO 9001:2015 - International Organization for Standardization
ISO Class 8 Clean rooms
Lights Out Manufacturing
3D Electronic Part File Formats
IGES - Initial Graphics Exchange Specification, ANSI file format.
STEP - Standard for the Exchange of Product Model Data

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