
RD Rubber Technology Corporation provides comprehensive elastomer engineering solutions to produce custom-molded rubber components for critical-to-function applications. As a custom rubber component manufacturer, we support original equipment manufacturers (OEMs) requiring engineered-quality components in highly regulated sectors, including defense, aerospace, and space exploration. All of our components are manufactured domestically at our California facility, which minimizes logistics risks and ensures a secure supply chain for our customers.
We maintain the following registrations and certifications to satisfy regulatory and customer specifications:
Compliant
(self assessment)
8 Cleanroom
The majority of our engineering services are incorporated into our standard molding procedures, as needed. Learn about those, below, as well as our other high-value services such as reverse engineering for legacy parts.
Reverse Engineering & Support for Legacy Rubber Parts
For operations managing aging infrastructure, maintaining defense hardware, or procuring components from obsolete sources, RD Rubber Technology Corporation provides dedicated reverse engineering services. We can recreate obsolete rubber components and support the manufacturing of discontinued rubber seals when original technical drawings or product sheets are no longer available. Only a single physical sample is required. Once it is obtained, our FaroArm CMM scans and measures the part to capture its exact dimensions. Our engineers use the generated data to engineer custom-molded rubber parts to their exacting requirements.
This capability has been invaluable particularly for our customers in the aerospace and defense sector. Our reverse engineering services prevent unplanned interruptions in critical-to-function systems and extend the operational life of capital equipment without requiring original part files.
Reverse Engineering Services FAQs
If you’d like to get in touch with us regarding a legacy rubber component, please contact us directly at info@rdrubber.com or call our main office at 562-941-4800.
Product Development & Concurrent Engineering for Rubber Parts
Engaging early in the product development phase allows our engineering team to optimize components for manufacturability and cost efficiency. Through concurrent engineering for rubber parts, we collaborate with our customer’s procurement and engineering teams to achieve rubber molding for manufacturability:
Optimize Part Geometries
for Manufacturability
and reduce material scrap rates.
Establish Proper
Dimensional Controls
Determine Efficient
Molding Methodologies
Materials Engineering & Custom Elastomer Formulation
Operating in demanding environments requires precise material science. RD Rubber Technology Corporation provides our customers with technical consultations to ensure thermoset elastomer components withstand severe operational stressors, including extreme temperatures, intense pressures, corrosive gases, and reactive chemicals.
Technical Material Matrix
RD Rubber provides thermoset elastomer manufacturing in the 10 to 90 durometer range across diverse polymer groups:

| Properties | Natural Rubber | SBR | EPDM | Neoprene | Nitrile | Silicone | Viton® | Fluorosilicone | Chlorobutyl |
|---|---|---|---|---|---|---|---|---|---|
| Hardness Range (Shore A) | 30-95 | 40-95 | 30-85 | 30-90 | 40-100 | 40-80 | 50-95 | 40-80 | 30-100 |
| Heat Resistance (Deg. C) | |||||||||
| Max. Continuous | 75 Deg. C | 85 Deg. C | 130 Deg. C | 95 Deg. C | 100 Deg. C | 205 Deg. C | 205 Deg. C | 170 C | 100°C |
| Max. Intermittent | 105 Deg. C | 115 Deg. C | 150 Deg. C | 125 Deg. C | 130 Deg. C | 300 Deg. C | 300 Deg. C | 220 C | 120°C |
| Low Temp. Resistance | -60 Deg. C | -55 Deg. C | -50 Deg. C | -35 Deg. C | -20 Deg. C | -60 Deg. C | -20 Deg. C | -60 C | -45°C |
| Resistance | |||||||||
| Oxidation | Fair | Fair | Excellent | Very Good | Good | Excellent | Outstanding | Excellent | Excellent |
| Ozone & Weathering | Poor | Poor | Outstanding | Very Good | Fair | Outstanding | Outstanding | Outstanding | Excellent |
| Oil Resistance | |||||||||
| *ASTM Oil No. 1 @ 20 Deg. C | Poor | Poor | Fair | Excellent | Excellent | Excellent | Excellent | Excellent | Poor |
| @ 100 Deg. C | Unsat. | Unsat. | Unsat. | Good | Good | Good | 150 Deg. C Excellent | 150 Deg. C Excellent | Poor |
| *ASTM Oil No. 3 @ 20 Deg. C | Unsat. | Unsat. | Unsat. | Good | Excellent | Good | Excellent | Excellent | Poor |
| @ 100 Deg. C | Unsat. | Unsat. | Unsat. | Fair | Good | Fair | 150 Deg. C Excellent | 150 Deg. C Excellent | Poor |
| Fuel Resistance | |||||||||
| ASTM Fuel 'B' @ 40 Deg. C | Unsat. | Unsat. | Unsat. | Poor | Fair | Unsuitable | Excellent | Fair | Poor |
| Solvent Resistance (20 Deg. C) | |||||||||
| Alcohol | Good | Good | Good | Good | Good | Good | Good | Good | Good to Excellent |
| Acetone | Fair | Fair | Good | Fair | Unsat. | Fair | Unsuitable | Unsuitable | Good to Excellent |
| Benzene | Unsat. | Unsat. | Unsat. | Unsat. | Unsat. | Unsat. | Good | Good | Poor |
| Chemical Resistance | |||||||||
| Acids | Fair | Fair | Good | Good | Good | Fair | Excellent | Good | Good to Excellent |
| Bases | Good | Good | Good | Fair | Fair | Fair | Good | Fair | Good to Excellent |
| Physical Strength | Excellent | Good | Good | Good | Good | Poor | Good | Poor | Good |
| Compression Set | Good | Good | Good | Fair to Good | Good | Good | Good | Good | Fair |
| Tear/Abrasion Resistance | Excellent | Good | Good | Good | Good | Poor | Good | Poor | Good |
| Resilience | Excellent | Good | Very Good | Very Good | Good | Good | Fair | Fair | Fair |
| Permeability to Gases | Poor | Fairly Low | Fairly Low | Low | Low | Fairly Low | Very Low | Fairly Low | Excellent |
| Electrical Strength | Excellent | Excellent | Excellent | Good | Poor | Excellent | Good | Excellent | Excellent |
| Flame Resistance | Poor | Poor | Poor | Self-extinguish | Poor | Good | Self-extinguish | Self-extinguish | Poor |
| Water Resistance | Very Good | Good | Excellent | Good | Good | Good | Good | Good | Excellent |
ASTM Oil No. 3 (flash pt. 163 Deg. C Aniline pt. 70 Deg. C) has a severe swelling effect. Both oils are petroleum based and are fully described in ASTM D471.

Custom Elastomer Formulation Options
When standard commercial compounds do not align with critical performance criteria, our development team creates custom elastomer formulations. Elastomer matrices can be altered and optimized for:
- Low compression set rubber compounds to maintain elastic properties and sealing force under prolonged compressive stress.
- Resistance to fluid permeation, chemical degradation, and high-altitude radiation exposure.
- Custom color matching to satisfy specific industrial identification or safety specifications.
Additionally, we offer fiber-reinforced rubber for components that need to withstand greater mechanical stressors than what elastomers alone can handle.

Custom Rubber Prototyping Services
To validate component form, fit, and function prior to full-scale production, RD Rubber Technology Corporation offers custom rubber prototyping services.
Custom-molded rubber parts undergo thorough testing for the environment in their intended application. Prototyping enables our engineering team to refine manufacturing parameters, cycle times, as well as material behaviors, which mitigates the risks before initiating high-volume manufacturing.

Advanced Rubber Molding & Substrate Bonding
RD Rubber Technology Corporation maintains specialized manufacturing capabilities across multiple molding and assembly methods to produce engineered-quality custom-molded rubber components for critical-to-function applications.
- Rubber overmolding and Rubber-to-Metal Bonding: An elastomer is molded directly onto a metal or plastic substrate, which eliminates mechanical leak paths and ensures a bond strength that surpasses the tear strength of the rubber itself.
- Rubber Injection, Transfer, and Compression Molding: The optimal process is selected based on part size, compound geometry, and target production volume.
- Liquid Injection Molding (LIM) Capabilities: An automated, repeatable process for high-precision, medium to high-volume liquid silicone rubber component manufacturing.

Controlled Environment Manufacturing
RD Rubber Technology Corporation operates an ISO 14644 certified Class 8 cleanroom. This controlled environment minimizes particulate contamination during liquid silicone molding and high-purity inspection processes.
Quality Engineering, Compliance & Metrology
To satisfy strict tolerance standards in critical-to-function aerospace, defense, and medical applications, we implement
rigorous inspection technologies and quality guidelines.
- Advanced Metrology
Advanced Metrology
Our FaroArm CMM rubber inspection system provides exact 3D scanning and tolerance verification against digital CAD files to ensure geometric accuracy.
- Material Testing
Material Testing
Durometer verification, tensile strength, elongation, and Moving Die Rheometer (MDR) testing ensure each component meets strict engineering specifications.
- Full Material Traceability
Full Material Traceability
Batch control procedures provide complete component traceability and material testing data from the raw polymer to the final delivery.
- Regulatory Standard
AdherenceRegulatory Standard Adherence
Manufacturing practices conform to ANSI and Mil-Spec compliant rubber molding guidelines, satisfying the quality assurance requirements of the Department of Defense (DOD) Joint Certification Program (JCP)
General Engineering Services FAQs
By engaging early in the product development phase, our engineering team collaborates directly with our customer’s team to optimize components for manufacturability and cost efficiency. We refine part geometries to minimize molding defects, establish precise dimensional controls for seamless mechanical integration, and determine the most appropriate molding method based on your production volume and requirements.
Rather than applying a one-size-fits-all approach, our engineering team evaluates your specific application volume and long-term operational requirements to determine the most appropriate custom molding method. This approach ensures that the selected manufacturing processes are cost efficient and the engineered-quality performance is met for critical-to-function operations.
If standard compounds do not align with your performance criteria, our development team creates custom thermoset elastomer formulations as well as fiber-reinforced rubber components, which are engineered to withstand severe operational stressors.
Yes, our engineers can alter and optimize elastomer matrices to solve highly specific technical challenges. For example, we can engineer low compression set rubber compounds to maintain sealing force and elastic properties under prolonged compressive stress, increase resistance to fluid permeation and high-altitude radiation exposure, or formulate custom color-matching for industrial safety identification.
RD Rubber Technology Corporation is a 100% domestic custom manufacturer located in Santa Fe Springs, CA. Our domestic footprint eliminates international supply chain disruptions and provides our aerospace, defense, and space exploration clients with a highly secure chain of custody. To protect sensitive data for these sectors, we maintain comprehensive security and defense credentials: we are ITAR registered, Department of Defense (DOD) Joint Certification Program (JCP) certified, NIST 800-171 compliant, and CMMC Level 2 certified (self assessed).
Engineered-Quality Custom Rubber Components Since 1986: Contact RD Rubber Today
For OEMs requiring precision custom-molded rubber solutions for critical-to-function applications, RD Rubber Technology Corporation provides technical engineering consultation and domestic manufacturing capabilities. Since 1986, based out of our California facility, we’ve been the trusted source of critical-to-function rubber components for aerospace, defense, and space exploration industries.
Contact our engineering team to discuss material selection, process engineering, or other questions you may have. To submit specifications for your custom-molded rubber solutions, request a quote today.




