Gas Permeable PDMS Tube
PDMS Tubes are similar to the PDMS Membranes Limitless Shielding supplies, just in tube form. These tubes are ideal for peristaltic pumps, boasting an extended life for this application.
Our platinum cured silicone tube is FDA and BfFR compliant, with full WRAS approval for hot and cold water. NSF approved tubing is also available by special order. The PDMS membrane tubes are odour free, and produced using a platinum cure catalyst system. They are available in lengths from 1m up to 25m.
PDMS tube is available from 1.2mmOD x 0.5mmID up to 31mmOD x 25mmID.
For many common gases, PDMS is 30 times more stable than non-silicone stable polymers. Applications include gas analysis, gas detection, gas enrichment, gas separation, and cell growth support. Download the data sheet below for technical specifications such as gas permeability rates for oxygen, carbon dioxide, nitrogen, and hydrogen. MSDS information is also available.
PDMS membranes are also available in 20µm, 50µm, 100µm, 200µm, 250µm, 300µm, 400µm, 500µm, 600µm, 800µm, 1600µm, 3200µm Thicknesses
Technical Information
| Property | Condition | Value | Method |
|---|---|---|---|
| Dielectric strength | - | 80 - 100 kV/mm | - |
| Volume resistivity | - | 10¹⁴ Ohmcm | IEC 60093 |
| Hardness Shore A | - | 27° | DIN ISO 48-4 |
| Tensile strength | - | 6.0 N/mm² | ISO 37 type 1 |
| Elongation at break | - | 450 % | ISO 37 type 1 |
| Compression Set | 22 h | 100 °C | 5 % | DIN ISO 815-1 type B method A |
| Gas permeability (selectively) | - | CO₂/N₂ = 10:1 | DIN 53536 |
| Water vapour permeability | 24 h | 20 µm | 3000 g/m² | JIS 1099 A1 |
| Water vapour permeability | 24 h | 50 µm | 1200 g/m² | JIS 1099 A1 |
| Water vapour permeability | 24 h | 100 µm | 800 g/m² | JIS 1099 A1 |
| Glass transition temperature | - | -126 °C | - |
| Operating temperature | - | -45 - 150 °C | - |
| Tear strength | - | 10 N/mm | ASTM D 624 B |
| Gas Permeability Rates* | Applications | Membrane Thickness | ||
| Oxygen | 50 | Gas Analysis | 0.125mm(0.005″) | 0.15mm(0.006″) |
| Carbon Dioxide | 270 | Gas Detection | 0.15mm(0.006″) | 0.2mm(0.008″) |
| Nitrogen | 25 | Gas Enrichment | 0.25mm(0.010″) | 0.3mm(0.012″) |
| Hydrogen | 55 | Gas Separation | 0.35mm(0.014″) | 0.43mm(0.017″) |
| Cell Growth support | 0.6mm(0.024″) | 1.0mm(0.040″) | ||
| *In barrers 10-9 (cc gas(RTP)cm)/(sec cm2 cmHg ΔP) For more information, visit here. | ||||