Gas Permeable PDMS Membranes are thin silicone or polydimethylsiloxane (PDMS) membrane products which can be used as a barrier to liquid and permeable path for various gaseous elements and compounds.
We supply these silicone membranes in sheets or rolls from as thin as 0.075mm (0.003″) to 1mm (0.040″) thick. Sheets are 300mm (12″) square.
This material can be modified to produce thin film parts, or combines with many other materials to produce composite materials specific to your requirements.
Technical Information
| Property | Typical Value |
| Hardness | 50 Shore A |
| Tensile Elongation | 8.9 MPa |
| Elongation | 570% (400 min) |
| Density | 1.12-1.16 |
| Tear Die B | 35 kNm-1 |
| Colour | Translucent |
| 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) | ||||
Custom thicknesses are available on request. (MOQ applies)
Please contact us for if you require further information or if you have a specific requirement.
Product Documentation
