Gas Compatibility with Various Materials

Gases can react with containers and tubing as well as with each other. The degree of reaction can range from premature aging to explosion. It is always best to prevent a possible reaction than to repair the damage of one. For example, Table 5.6 indicates that chlorine will not react with an O-ring made of Viton, but will with the others listed. Table 5.6 also indicates that acetylene will react with zinc and 

Chemical Name and Formula Materials of Construction6 Common Chemical Group  

S—Satisfactory for use with the intended gas (dry anhydrous) at a normal operating temperature of 70°F (21°C). 

Cl through Cl—Conditionally acceptable for use with the intended gases as follows  

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