How to seal threaded

How to seal threaded connection: 

Threaded connection is a common connection method for valve and pipe fitting, it is widely used in the market. There are two methods to seal thread:

1. Indirect seal: tighten the thread, so that it will press the gasket in the middile which will achieve the sealing effect.

2. Direct seal: internal thread and external thread directly play a sealing effect. In order to ensure that the connection air-tight, we can use the PTFE sealing tap to be filled at the jointing thread part. PTFE sealing tape is widely used, it has good corrosion resistance, excellent sealing effect and easy to use. When disassembled, it can be completely removed.