The Art of Precision: A Study in 0.21mm Silicone Architecture
In the high-stakes world of microfluidics, where the difference between failure and breakthrough is measured in microns, Vina Rubber presents a masterclass in elastomer engineering. Our collaboration with Memetis GmbH (Germany) stands as a testament to what happens when “industry standards” are treated merely as a starting point.
The Vina Rubber Advantage
- Certified Quality: Operating under ISO 9001:2015 standards with FDA-compliant and RoHS-certified materials to ensure global safety and regulatory compliance.
- Material Versatility: High-grade NBR, EPDM, Silicone, and Neoprene available in a 50–80 Shore A hardness range (other materials available; MOQs apply).
- End-to-End Manufacturing: From In-House Tooling to Injection and Compression Molding, we control the entire process to ensure precision and speed.
- Global Logistics: Seamless Worldwide Delivery via air and sea freight, ensuring your components arrive on time, anywhere.
- Vietnam Advantage: Competitive pricing by leveraging Vietnam’s strategic manufacturing hub, delivering premium quality at a lower total cost of ownership.
The Client: Memetis GmbH
Memetis GmbH is at the vanguard of micro-valve technology, designing ultra-compact fluidic systems that demand absolute integrity. Their Normally-Closed Micro Valves require a heart—a silicone membrane—that is as resilient as it is delicate.

Memetis GmbH micro-valves (Image courtesy of Memetis GmbH)

Memetis GmbH micro-valves (Image courtesy of Memetis GmbH)

Finished 50A & 55A silicone membranes. Pure, precise, and prepared for German engineering.
The Evolution of a Challenge: From Capability to Mastery
The project began with a standard request: a membrane thickness of 0.21±0.05 mm. For Vina Rubber, this was achieved with effortless efficiency. However, the pursuit of perfection does not rest.
Seeking to push the boundaries of non-metallic science, the partners at Memetis issued a challenge that verged on the impossible: reduce the tolerance to ±0.03 mm.
What followed was an arduous period of quiet intensity. This was not merely a manufacturing adjustment; it was a re-imagining of the process. We meticulously optimized the molecular consistency of our raw materials, re-engineered our molding fleet for microscopic stability, and refined our thermal curing cycles. After days of relentless iteration, the “impossible” became our new standard.
Verification: The Quiet Language of Measurement
True luxury lies in the details that are invisible to the naked eye, yet verified by the most rigorous standards. We don’t ask for trust; we provide proof.
Technical Documentation: The Dial of Truth
Our verification process for the 0.21 mm membrane is captured here, showcasing a level of consistency that exceeds global industry norms.
Watch: The silent precision of Vina Rubber’s verification laboratory.
Specimen Preparation
Visual inspection of the high-purity silicone membrane array before high-precision measurement.
Real-time Gauge Reading (0.218 mm)
Precision dial gauge reading of 0.218 mm, verifying capability within the 0.21±0.03 mm range.
Consistency Verification (0.219 mm)
Secondary validation at 0.219 mm confirms consistency and perfect fit for ±0.03 mm tolerance.
The Audit Trail
A New Benchmark in Elastomer Science
By delivering a 0.21±0.03 mm membrane for the Memetis Normally-Closed Valve, Vina Rubber has transcended traditional manufacturing. We have entered a space where technical rubber becomes a component of high-tech art.
- Materials: Medical-grade, biocompatible silicone with long-cycle fatigue resistance.
- Engineering: In-house micro-tooling designed for zero-deflection molding.
- Legacy: A partnership built on the shared belief that “good enough” is the enemy of the exceptional.
Vina Rubber | Precision in Every Component, Excellence in Every Mold.