Crimp closure, N 20, alu.,pressure rel.,center hole,Butyl d.gray/PTFE gray,3.0mm

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Item number: 702071

Package unit 100 Piece(s)

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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