LSR Quality Control

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LSR Quality Standards: Meeting Rigorous Specifications

From product design and tooling to prototyping and parts production, your silicone rubber molding manufacturer must possess the capabilities to meet the most demanding specifications. A steadfast commitment to delivering the expected quality is paramount. Quality standards for liquid silicone rubber injection molding should encompass a robust quality system equipped with problem-solving tools and protocols, including:

1. Advanced Quality Planning
2. Custom Validations and Qualifications
3. Control Plans
4. Customized Procedures
5. Diverse Metrology Capabilities

Early quality planning, visual inspections, and thorough material and part testing are integral to ensuring high-quality results. ISO certifications, such as ISO 9001, ISO 13485 for the medical industry, and IATF 16949 for the automotive sector, provide additional assurance that your LSR parts manufacturer has established quality systems and an unwavering commitment to consistent quality production.

lsr injection molding quality inspection room

Liquid Silicone Rubber (LSR) Materials Inspection

At Jiaze Silicone, our commitment to quality extends to the meticulous inspection of Liquid Silicone Rubber (LSR) materials as they enter our inventory. Our rigorous materials inspection process ensures that every batch meets the highest standards for purity, consistency, and performance. As we receive LSR materials into our facility, our dedicated quality assurance team employs a comprehensive inspection protocol.

The inspection covers various critical aspects, including assessing the physical properties of the LSR materials, such as viscosity and color consistency. Chemical analysis is conducted to verify the composition and ensure it aligns with the specific requirements for each application. The inspection also involves checking for any potential contaminants, impurities, or irregularities that could compromise the quality of the final LSR products.

Our commitment to delivering precision and reliability in LSR manufacturing starts with the careful scrutiny of incoming materials. By adhering to stringent inspection standards, we guarantee that the LSR materials in our inventory meet the exacting specifications demanded by our diverse range of clients. This dedication to quality at the materials level sets the foundation for excellence in the production of LSR components for various industries and applications.

LSR Dimensional Measurements

At Jiaze Silicone, precision is paramount in our LSR production. Our Quality Assurance (QA) lab is equipped with a diverse range of metrology tools, ranging from traditional instruments to state-of-the-art technology. For accurate and repeatable measurements, we create custom fixtures that secure LSR parts during dimensional assessments.

Our advanced Optical Coordinate Measuring Machines (CMM) utilize mirrors and tailored fixtures for intricate measurements, ensuring precision at every step of the process. With a commitment to excellence, we employ cutting-edge technology and meticulous craftsmanship to meet the highest standards in LSR dimensional measurement.

lsr injection products dimension inspection

LSR Functional Testing Metrology

At Jiaze Silicone, our commitment to quality extends beyond dimensional measurements. We conduct comprehensive functional testing that simulates real-world conditions to assess the performance of LSR parts. This includes rigorous examinations such as shore hardness and tensile testing, as well as critical leak and pressure testing for seals and diaphragms.

Given the unique flexibility and compression set characteristics of LSR compared to rigid polymers, we employ specialized methodologies in our testing processes. Accurate measurement of LSR molded parts requires specific work instructions and training to ensure precision. For instance, when measuring shore hardness using hard gages, the correct pressure is meticulously applied to achieve accurate and consistent results. In our pursuit of excellence, Jiaze Silicone employs cutting-edge technology and industry expertise to guarantee the reliability and performance of LSR components.

Visual Inspection

In our quality system at Jiaze Silicone, visual inspection is a critical step in ensuring the impeccable standards of our Liquid Silicone Rubber (LSR) components. Advanced optical equipment, including magnifiers, stereoscopes, and high-powered microscopes with 10-300x magnification, is utilized for meticulous examinations of LSR components.

This rigorous visual inspection process guarantees that each component meets the stringent standards set by our diverse clientele. Whether it’s intricate micro-molded LSR components or larger parts, our commitment to precision and accuracy remains unwavering.

At Jiaze Silicone, visual inspection is integral to our quality assurance process, underscoring our dedication to delivering top-notch LSR components across various industries, including medical, automotive, and consumer electronics.

lsr molding visual inspection

LSR Quality Solutions

Our commitment to quality at Jiaze Silicone is underscored by our tailored approach to meet the unique demands of different industries and applications. Manufacturing processes, ISO certification requirements, and overall quality plans are meticulously aligned with the specific needs of our customers. In the medical sector, components undergo stringent testing for purity and quality, adhering to the exacting standards set by our clients. Jiaze Silicone’s state-of-the-art facility, featuring fully-automated production, inline value-added processes, and packaging, ensures the precision and cleanliness required, complemented by Class 8 clean room molding for medical devices with stringent hygienic requirements.

Beyond medical applications, we extend our quality solutions to infant products and food and beverage items that may necessitate post curing. Our post-curing process involves placing LSR molded parts in an oven where heat is applied to promptly eliminate gases and volatiles, a natural process that occurs over time. Jiaze Silicone provides complete traceability and documentation of the post-curing history for each lot, offering transparency and reliability. The introduction of specialized, low-volatile grades of LSR provides an additional option to minimize volatile content in molded components, ensuring the highest quality standards across diverse applications.

Jiaze Silicone, as a leading provider of custom injection molding solutions, places a strong emphasis on delivering high-quality products. The commitment to excellence is evident in Jiaze Silicone’s early quality planning, aggressive quality systems, and tailored quality processes that align with the unique specifications of each customer.

Key features quality control systems

Process Control

Jiaze Silicone maintains the highest level of process control through stringent tooling standards, robust IQ/OQ/PQ validations, control plans, and an industry-leading approach to silicone molding. Automation plays a crucial role in achieving superior quality levels for parts and products.

Technology Investment

The company continually invests in cutting-edge metrology technology for material testing, part inspection, and functional testing. The arsenal of quality tools includes vision systems, leak and pressure testing equipment, and automated optical coordinate measuring devices to enhance process stability and overall quality.

Workforce Development

Team members at Jiaze Silicone, both hourly and salaried, undergo extensive training on the latest technology, manufacturing methods, and customer requirements. Visual standards and guides are provided to ensure consistent quality across all aspects of the manufacturing process.


Jiaze Silicone holds RoHS, REACH, FDA, LFGB, CE, ISO 9001 and ISO 13485 certifications, further affirming the commitment to maintaining the highest standards in quality management.