Seals, silicones

The sampling of liquid mixtures in GC is usually done by means of microliter syringes through a self-sealing silicone septum. The... 

Some typical elastomers are natural rubber, which is gathered from trees, SBR rubber, which is used a lot in motorcar tires, neoprene, as in wet suits and oil seals, EPDM, a general purpose rubber, butyl, a heat-resistant rubber with the ability to keep the air in car tires, nitrile for oil seals, silicones for heat resistance, fluoro-elastomers for chemical resistance, and last but not least, polyurethanes, which cover a number of the above fields. Table 1.1 shows some of the advantages of castable polyurethanes over conventional rubbers. 

T. Fujita, K. Hatano, K. Maenaka, T. Mi-zuno, T. Matsuoka, T. Kojima, T. Oshi-ma, M. Maeda, Vacuum sealed Silicon Bulk Micromachined Gyroscope, in Proc. 

Sample introduction for liquids on packed columns is often accomplished with a microsyringe through a self-sealing silicone septum as shown in Figure 5.8. In this figure, the coltunn is lined up colinearly with the syringe needle providing for either of two possible injection modes on-column or flash vaporization. 

Samples were injected by means of a 10y 1 Hamilton syringe, through a self-sealing silicone seal, which was placed in the open end of the T-piece connecting the furnace to the gas stream. The injection port was surrounded by a tube, in the form of a loop, carrying cooling water to prevent deterioration of the seal at high temperatures. 

Song T et al (2010) Arrays of sealed silicon nanotubes as anodes for lithium ion batteries. Nano Lett 10 1710-1716... 

Standard specification for sealed insulating glass units Compound, insulating and sealing, silicone... 

Song T, Xia JL, Lee JH, Lee DH, Kwrai MS, Choi JM, Wu J, Doo SK, Chang H, Park W, II Zang DS, Kim H, Huang YG, Hwang KC, Rogers JA, Paik U (2010) Arrays of sealed silicon nanotubes as anodes for lithium irai batteries. Nano Lett 10 1710-1716... 

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