Crimp closure, N 20, alu.,pressure rel.,center hole,Butyl d.gray/PTFE gray,3.0mm
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These closures with molded Butyl/PTFE septa are only laminated with PTFE in the contact area with the sample. Thus the elastomeric Butyl can achieve on the vial's glass rims a very tight seal, while in comparison a completely PTFE covered septum would have a very slippery surface on the glass and could easily be twisted around. These typically called "Pharma-Fix" closures have a good analytical purity. The bridges of the cap's scorelines break open at an internal vial pressure exceeding 3 bars (± 0.5 bars), thus releasing overpressure in a crontrolled way. Functionality of the cap is not depending on the design of the vial's crimp neck (beveled top, flat crimp neck).
| Additional cap features | Pressure release cap (safety) - bridges of the scorelines open at a pressure of more than 3 bars (± 0.5 bars) and release pressure in a controlled way |
|---|---|
| Additional closure features | Molded septum, only centrically laminated with PTFE, typically called Pharma-Fix, excellent sealing, temp. resistant from -40 °C up to 120 °C |
| Assembling process | Assembled |
| Autosampler compatibility | Agilent, PerkinElmer |
| Cap color | Silver |
| Cap hole | Yes |
| Cap material | Aluminum |
| Closure magnetic | No |
| Closure type | Crimp closure |
| Colors of septa material | Dark gray/gray |
| Gross weight (incl. packaging) | 181.6 g / 0.4 lbs |
| Hazardous material | No |
| Nominal diameter | N 20 |
| Packaging dimensions | 150 x 20 x 230 mm / 5.91 x 0.79 x 9.06 Inch |
| Recommended application(s) | Headspace |
| Scope of delivery | 100x N 20 ready assembled crimp closures |
| Septa hardness | 50° shore A |
| Septa material | Butyl/PTFE (Pharma-Fix), Butyl/PTFE (high purity) |
| Septa thickness | 3.0 mm / 118,1 mil |
| Storage temperature | 15–25 °C / 59–77 °F |
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