Marathon long-life center guide GC septa are ideal for standard manual injection GC and GC/MS.

• Reliabily seals against the carrier gas pressure in the inlet
• Excellent durability and resealing
• Good solvent and tear resistance
• Does not contaminate or bleed material into the chromatographic system
• Long life septa, pre-pierced for minimal coring
• Typically achieves up to 400 injections without failure

These GC septa are made up of silicone and are capable of being pierced and resealing time after time without pieces of the septa being deposited in the GC inlet system.