Global industry-leading manufacturer of high-performance, innovative solutions and components across a wide range of industries.
Serving Biopharm and Cell Therapy
Industry-leading provider of material science-based solutions in the biopharmaceutical and cell therapy markets for single-use fluid management.
Medical Components and Custom Solutions
We provide custom components and engineered systems for the medical device industry, including critical parts where precision enables superior performance.
Electronics and Semiconductor Industry Solutions
Design and manufacture a complete line of ultra-high purity, fluoropolymer-based fluid handling components and solutions for the electronics and semiconductor markets.
Industrial & Consumer Solutions (ICS)
Superior engineering and customer support to achieve safety, performance, and regulatory compliance across a broad range of capabilities. Offerings include Tygon® Tubing and Accessories, Hoses and Fittings, Heat Shrink Tubing, and High-Performance Seals.
Sensors Flow Measurement Solutions
Playing an essential role in preventing cross-contamination, validating essential processes, and driving cost savings, we specialize in the development and production of high-quality single-use flow sensors and corresponding equipment.
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At Saint-Gobain Medical Specialty Closures, we offer precision press fit liner insertion solutions designed to meet the needs of a wide range of applications, from laboratory consumables to diagnostic packaging. The press fit method is a simple, reliable, and cost-effective technique for securing liners within caps, providing effective sealing performance without the need for adhesives, heat, or complex assembly processes.
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Benefits of Press Fit Closures
Press fitting involves mechanically inserting a liner into the cap’s recess using controlled force. The liner is manufactured with a slightly larger diameter than the cap cavity, creating an interference fit that holds the liner securely in place. This method offers an efficient and scalable approach for closure manufacturing. Discover the benefits of press fit closures:
Cost-Effective Solution
Press fit liner assembly requires minimal capital investment and offers low per-unit production costs, making it ideal for high-volume manufacturing
Clean, Chemical-Free Process
No adhesives, solvents, or ultrasonic energy are required, reducing the risk of contamination and extractables
Fast and Scalable
Press fit systems support both manual assembly for low-volume or specialty applications and automated high-speed production for large-scale manufacturing
Flexible Design Options
Compatible with a wide variety of cap and liner materials, including polypropylene, polyethylene, silicone, and polyolefins
Reliable Performance
Provides sufficient liner retention and sealing performance for a range of non-critical and general-purpose applications
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Press Fit Closure Application Areas
Press fit liner insertion is well-suited for applications where process simplicity, cost efficiency, and speed are prioritized, including:
Laboratory consumables
Diagnostic reagent packaging
General medical device packaging
Research-use-only (RUO) products
Cost-sensitive closure solutions
Press Fit Liner Performance Considerations
While press fit liner insertion offers significant advantages, it is important to consider its limitations. Press fit relies on mechanical interference alone, which may not be suitable for applications requiring high mechanical security, tamper resistance, or exposure to extreme temperatures. Additionally, under high mechanical stress, repeated opening and closing, or aggressive transport conditions, there is a potential for liner movement or dislodgement. Our engineering team works closely with customers to ensure cap and liner tolerances are optimized for reliable press fit performance. We also offer custom design services to tailor press fit solutions to specific product requirements.
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With decades of experience in medical closure manufacturing, Saint-Gobain offers press fit liner assembly as part of a comprehensive portfolio of cap and closure solutions. Our capabilities include design support and liner material selection, process optimization for high-volume production, quality assurance and regulatory documentation, and scalable manufacturing from pilot to full-scale production.
