MACHEREY-NAGEL 70261 Septa for Cap N8, PTFE, White, 0.25 mm Diameter (Pack of 100)

Replacement septa for 8-425 screw caps from MACHEREY-NAGEL. PTFE virginal: temperature resistant: –200 °C / +260 °C, very high analytical purity, very hard (but very thin material), no reseal ability. Red Rubber / TEF (FEP): temperature resistant: –40 °C / +110 °C, medium analytical purity, medium coring, medium hard to penetrate, reseal ability medium. Silicone / PTFE: temperature resistant: –60 °C / +200 °C, high analytical purity, low to medium coring, soft and easy to penetrate, reseal ability low to medium.

• PTFE / Silicone / PTFE: temperature resistant: –60 °C / +200 °C high analytical purity, very low coring, soft and easy to penetrate, very low reseal ability
• Packed with 100 pieces in a reseal able zip-lock bag
• For all replacement septa you can ask for a certificate of conformity (CoC) for your own ISO documentation