Silicone septa vs. rubber septa

Mar 31, 2022 · Black rubber septa. When comparing red and black rubber septa, one thing comes to mind. Black rubber septa are molded from a higher density rubber compound compared to the red one. This septum has characteristics like the gray butyl stopper. But, the difference is with a smaller temperature range of –20 to 100°C.

Bonded caps from Specialty Silicone Products (SSP) are made of polypropylene (PP) plastic and bonded to platinum-cured silicone septa that’s easy-to-pierce. To ensure analytical purity, SSP uses a proprietary bonding technology that maintains the septum’s analytical properties. In other words, our bonding process won’t add contaminants

tan PTFE/silicone septa, diam. × thickness × PTFE thickness 20 mm × 0.125 in. × 2 mil, pkg of 100 ea Crimp seals with PTFE/rubber septa. Compare Product No ...

Generally, silicone septa are more easily pierced than red rubber or butyl septa. For thicker, hard-to-pierce septa, a small gauge (23 gauge) needle may be required, or a stronger S-needle can be used. Preslit septa are the best option for easy penetration, reducing the likelihood of coring.

tan PTFE/silicone septa, diam. × thickness × PTFE thickness 20 mm × 0.125 in. × 2 mil, pkg of 100 ea Septa, 20mm Chlorobutyl Rubber/PTFE, 52 Durometer, pk 100 ...

PTFE/High Performance Rubber is a highly pure synthetic red rubber septum that provides a reduced background level for specific GC applications, employing sensitive detectors such as ECD or NPD. PTFE/Silicone Septa (T/S) has high-quality, low background/blank value, 100% synthetic pure silicone septa.

General Purpose Septa for GC. Aijiren’s general-purpose septa are made from an enhanced injection-molded silicone rubber material. The septa material, dark red or gray in color, is specified to withstand over 200 automatic injections at an injection port temperature of 350 °C. You can have confidence in your chromatographic results knowing

PTFE/Silicone Septa: (T/S) High quality, pure silicone is laminated to 0.005” thick PTFE to give a pure, highly inert septum with excellent resealing characteristics even after repeated punctures. PTFE/Silicone septa are the preferred product for use in most HPLC and GC applications where resealability and high purity are critical.

Loose septa can be used as replacement parts for bottles with unbonded septas, and caps are also available separately. Septas can generally be autoclaved or dry heat sterilized and are available in multiple materials, including PTFE, silicone and red rubber.

Well-known as the best quality rubber turn-over closure with serrated stopper, Suba-Seal brand is available exclusively from Sigma-Aldrich. Ideal for air and moisture-sensitive chemistry procedures. After piercing with non-coring needle, rubber closes puncture, providing air and moisture tight seal to protect contents of vessel or container

Sep 28, 2015 · To expand on the topic of PTFE/rubber and PTFE/silicone: Depending on what type of rubber septa is being used, some rubber can only withstand temperature of 100 C while some can withstand up to 250 C. That also applies to silicone. Rubber septa are generally not recommended when chlorinated solvents are in use.

Both types of silicone and butyl rubber septa have a PTFE barrier layer which faces the sample, which reduces the contact between the sample and the silicone and butyl rubber. Before the PTFE layer is punctured, the chemical compatibility properties of the PTFE will

Green, PTFE/red silicone septa 100/pk 5182-0718 500/pk 5185-5829 Red, PTFE/red silicone septa 100/pk 5182-0719 Black, PTFE/red silicone septa 100/pk 5185-5838 Blue, PTFE/white silicone septa 100/pk 5182-0720 500/pk 5185-5863 Green, PTFE/white silicone septa 100/pk 500/pk 5185-5864 Red, PTFE/white silicone septa 100/pk 5182-0722

PTFE/Synthetic Red Rubber Septa: (PTFE/RR) -30 +110 -22 +230 PTFE/ High Perfomance Red Rubber Septa -40 +110 -40 +230 PTFE/Silicone Septa: (T/S) -60 +200 -76 +392 PTFE/Silicone/PTFE Septa: (T/S/T) * -60 +200 -76 +392 PTFE Septa * -200 +250 -328 +482 Polyethylene (PE) * -50 +80 -58 +176 Polypropylene (PP) * 0 +121 32 +250

The Aijiren Technologies inlet septa is made from strong silicone material and works well even at 35 degree C temperatures. This septa is compatible to use with , , 4890, , , GC columns. Application: For , , 4890, , , GCs This product is only available to. Compare this item.