Slotted Rubber Stopper

Product Description

• Rubber septa to seal vials used to store samples in a lab. These vials are typically used in conjunction with either a gas or liquid chromatograph.
• Sealing the injection port on top of a gas chromatograph. These injection port septa are meant to seal the entire chromatographic column.
• Sealing test ports on chemical or pharmaceutical processing equipment. When samples need to be taken in a closed system, use of an injection port septum may be a good way to insert a needle to take a sample without having to shut the entire system down.

*Rubber septum design varies widely depending on the application. Medicinal vial septa are typically compression molded out of Silicone or Butyl rubber in multi-cavity molds within a high controlled manufacturing environment. Other septum types may include a chemical barrier layer, most commonly PTFE, or in extreme case, two barrier layers. These designs are most often punched from a sheet of rubber.

*The quality of the barrier film and rubber are extremely important for many reasons. A poor quality septum may lead to improper re-sealing, skewed test results, or poor quality product. To minimize this, manufacturing inputs must be strictly controlled.