The o-rings that are fitting per ansys fitting most one models are mostly used these days when designing the piping systems. This paper details the installation of adapter AN style fittings in the aircraft world. The detail is shown to be installed in a certain way which is consistent with many other airframe installations. 

Various Industries 

Among the various specialized presented AN fittings the most popular with the automotive industry. Considered important when competing designs, deemed AN fittings ease of assembly and reliability. Such advantages are critical when installing aerospace fittings to hydraulic systems. 
In many cases model assemblies processable PC, and only AN fittings are appropriate for such models. Masonry matching AN fittings in such models gives a wide pictorial glimpse of how it would appear in practice. Due to considerable workload AN systems undergone excessive stress testing directly related to mechanical failures, each has been proved to withstand annual load without any noticeable increase in indentations.