VINA-MEMBRANE® UNIFIED TECHNICAL STANDARD (2026)
The Precision Benchmark for Micro-Elastomers [Vina-Membrane® | PDF-Download]
In the era of micro-fluidics and nano-precision devices, the “highest” global standards—such as ISO 3302-1 Class M1—have gracefully become a part of industrial history. While they once represented the pinnacle, today’s compact engineering demands more than just “standard” accuracy.
Modern innovation doesn’t happen in millimeters; it happens in microns. A tolerance of ±0.08 mm is no longer a benchmark—it is a limitation.
Vina Rubber is proud to introduce the VINA-MEMBRANE® Standard. By refining our HCR Silicone processing and In-house Tooling, we have moved beyond traditional boundaries to offer a definitive industry pulse: ±30μm (±0.03 mm).
VINA-MEMBRANE® UNIFIED TECHNICAL STANDARD (2026)
Precision Guidelines for Flat & 3D Geometry Membrane and Diaphragm Solutions
| Product Classification | Specification (T x W) | Material (Shore A ≥ 30) | Guaranteed Tolerance |
|---|---|---|---|
| I. VINA-FLATMEMBRANE® (Standard Flat Profile) | |||
| Ultra-Thin | 0.2 – 0.3 mm ≈ 0.008″ – 0.012″ |
Silicone (HCR) | ± 0.03 mm ± 0.0012″ |
| Ultra-Thin | 0.2 – 0.3 mm ≈ 0.008″ – 0.012″ |
EPDM / NBR | ± 0.05 mm ± 0.0020″ |
| Thin | 0.5 – 1.0 mm ≈ 0.020″ – 0.039″ |
Si / EPDM / NBR | ± 0.05 mm ± 0.0020″ |
| Micro Precision | T > 1.0 mm & W < 10 mm T > 0.039″ & W < 0.394" |
Si / EPDM / NBR | ± 0.10 mm ± 0.0039″ |
| Precision Components | T > 1.0 mm & W > 10 mm T > 0.039″ & W > 0.394″ |
Si / EPDM / NBR | ± 0.10 mm ± 0.0039″ |
| Large-Scale | Footprint 20 – 100 mm Footprint 0.787″ – 3.937″ |
Si / EPDM / NBR | ± 0.12 mm ± 0.0047″ |
| II. VINA-NON-FLAT® (3D / Formed Geometry) | |||
| Thin | 0.5 – 1.0 mm ≈ 0.020″ – 0.039″ |
Si / EPDM / NBR | ± 0.05 mm ± 0.0020″ |
| Micro Precision | T > 1.0 mm & W < 10 mm T > 0.039″ & W < 0.394" |
Si / EPDM / NBR | ± 0.10 mm ± 0.0039″ |
| Precision Components | T > 1.0 mm & W > 10 mm T > 0.039″ & W > 0.394″ |
Si / EPDM / NBR | ± 0.10 mm ± 0.0039″ |
| Large-Scale | Footprint 20 – 100 mm Footprint 0.787″ – 3.937″ |
Si / EPDM / NBR | ± 0.12 mm ± 0.0047″ |
ENGINEERING TECHNICAL NOTES
- Production Method: Vacuum compression molding for air-trap prevention and high-density structural integrity.
- Material Specification (HCR): High Consistency Rubber. Superior dimensional stability for ultra-thin sections.
- Silicone: FDA-compliant and Medical Grade.
- EPDM: Superior chemical and weather resistance.
- NBR: Excellent oil and fuel resistance.
- Dimensional Stability: Guaranteed wall thickness across flat sheets and 3D geometries (valves, diaphragms, bellows, ribs).
- In-house Tooling: All tolerances achieved via internal CNC tooling and precise shrinkage compensation.
- Quality Verification: 100% inspection to ensure ±30μm / ±50μm threshold.
WHY VINA-MEMBRANE®?
Beyond ISO Limits: Traditional ISO standards allow variances that can represent up to 40% of an ultra-thin membrane’s thickness. We close that gap. Our internal standards exceed ISO 3302-1 Class M1 requirements by over 50%, ensuring your micro-diaphragms and precision designs perform exactly as simulated
Material Integrity: By utilizing High Consistency Rubber (HCR) instead of liquid systems (LSR), we provide membranes and diaphragms with significantly higher tear strength and mechanical durability while maintaining sub-micron precision.
Ready for Micro-Technology: Designed specifically for Lab-on-a-Chip technologies, handheld medical diagnostics, and high-sensitivity pressure sensors.
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