La Pha Pack 20 03 0030 20mm Combination Seal: Aluminum Cap, plain, centre hole; Pharma-Fix-Septa, Butyl/PTFE, 50° shore A, 3.0mm, 100/pk
• Special, moulded Butyl/PTFE liner that is only laminated with PTFE in the contact area towards the sample. On the glass rims the elastic Butyl achieves a very tight seal.
• Temperature resistant from -40°C up to 120°C.
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