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Closure type
Crimp closure
Closure magnetic
No
Autosampler compatibility
PerkinElmer
Cap material
Aluminum
Cap color
Silver
Cap hole
Yes
Assembling process
Assembled
Autosampler compatibility
Agilent
Septa hardness
50° shore A
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
Colors of septa material
Dark gray/gray
Scope of delivery
100x N 20 ready assembled crimp closures
Nominal diameter
N 20
Recommended application(s)
Headspace
Septa thickness
3.0 mm
Septa material
Butyl/PTFE (high purity)
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
Septa material
Butyl/PTFE (Pharma-Fix)
SKU: 702071
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).