Parker A-LOK Twin Ferrule Compression Fittings are designed as leak-free connections for process, power and instrumentation applications. 

​Parker A-LOK 
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• A-LOK Catalogue
• A-LOK Pressure Working Tables
• A-LOK Specifications and Options
• A-LOK Materials Choice
• A-LOK Assembly & Remake Instructions
• A-LOK / Swagelok Interchange Statement
• ​Parker A-LOK material cert Information white paper
• ​Parker A-LOK Individual data sheets per Fitting