Short Thread Seals ND9

• Screw cap with the design of a crimp cap; therefore suitable for robotic handling
• Already assembled seal with slit liner available, in order to avoid vacuum within the vial in case of multiple injections
• Short thread seals also available as closed top version for storage purposes

PTFE virginal Seals

• Very inert and temperature resistant therefore also as coating on most other septa
• No elastomer therefore limited sealing and reclosing characteristics
• Only recommended for non-critical HPLC applications
• Mostly used by Merck/Hitachi and Water

Natural Rubber/TEF Seals

• Ideal for multiple injections due to its reclosing properties
• Temperature resistant from - 40 °C to 120 °C
• Used frequently in GC and HPLC

Silicone white/PTFE red Seals

• Is the purest synthetic elastomer and is therefore used for critical analyses
• Temperature resistance from - 60 °C to 200 °C
• Preferably recommended for single use injections due to less good reclosing properties

RedRubber/PTFE beige Seals

• New synthetic rubber comparable to silicone in terms of purity
• Temperature resistance from - 40° C to 150 °C
• Preferably recommended for single use injections due to less good reclosing properties

PTFE red/Silicone white/PTFE red Seals

• Is the purest synthetic elastomer and is therefore used for critical analyses
• Temperature resistance from - 60 °C to 200 °C
• Silicone septa coated with PTFE on both sides for low particle formation

Silicone white/Alu Seals

• Temperature resistance from - 60 °C to 200 °C

(Y-pre-cut) Seals

• With pre-cut septa only the silicone material is slit in Y-shape while the PTFE lamination remains intact. This way concentration changes occurring with completely slit septa can be avoided
• Ideal penetration aid for blunt and thick instrument needles, and prevents the concentration fluctuations that frequently occur with slit or cross slit septa

Silicone white/PTFE blue, slit Seals

• Is the purest synthetic elastomeric and is therefore used for critical analyses
• Temperature resistance from - 60 °C to 200 °C
• Preferably recommended for single use injections due to less good reclosing properties
• Slit septa in HPLC as penetration aid for blunt needles and to create a valve effect in case of multiple injections
• Application in GC, HPLC and headspace analysis

Seals for high temperature analysis and trace analysis

• 9 mm short thread seals with high purity PTFE virginal, or Aluminum septa
• Perfect for GC-MS and LC-MS
• An O-ring ensures 100% tightness

UltraBond Seals ND9

(Cap + Liner form an inseparable unit, so that the liner cannot be pushed into the vial even with a blunt needle)

• A special feature of an UltraBond closure system is that the screw cap and septa form an inseparable unit. This is made of a patented manufacturing process in which the molecular structure of the contact surface of the PP screw cap and the septa is modified in such a way that they form a strong bond without the use of adhesives
• Comparable systems on the market are LECTRABOND Seals from WATERS® and the INTERSEAL closure from Agilen

Magnetic Short Thread Seals, 6mm centre hole

(for CTC GC PAL + Thermo Scientific TriPlus Autosampler)

• More convenient and safer in handling than 11 mm magnetic crimp seals
• Ready-to-use closures

9 mm Short Thread PP Cap with thinned penetration area