A union joint structure makes a faucet easier to install, remove, and maintain, which is why it is widely used in water connections. However, even when the same type of union joint structure is used, differences in the contact surfaces and sealing method can directly affect connection stability, sealing performance, and installation efficiency.Some common union joint structures use flat contact surfaces combined with PTFE tape for sealing. This approach requires careful installation and adds extra steps to the process. Bestware has optimized both the union joint structure and sealing method so that the product structure itself provides more of the sealing function, reducing reliance on PTFE tape and installation experience.
Some common union joint structures use flat contact surfaces, where two flat surfaces are pressed together to form the connection, with PTFE tape providing additional sealing.Because the fit between flat surfaces is relatively limited, connection stability and sealing performance can be affected by tightening force and installation conditions. Using PTFE tape also adds an extra installation step.During installation, the direction and number of PTFE tape wraps need to be properly controlled:
· Too little tape: The seal may not be sufficient.
· Too much tape: It may interfere with proper tightening.
· Different installation techniques: Results may vary between installers, affecting consistency.
As a result, this conventional approach involves more installation steps and relies more heavily on installation experience.

Bestware has redesigned its union joint structure by replacing the conventional flat contact surface with a tapered contact surface.As the union joint is tightened, the tapered contact surfaces fit more closely together, increasing the contact between the mating surfaces. This helps create a more secure connection and reduces the risk of loosening.
Key advantages of the tapered contact surface:
· Closer fit
· More secure tightening
· Reduced risk of loosening
· Greater overall connection stability
However, a better-fitting contact surface alone is not enough. Reliable sealing also requires a properly designed sealing structure.

Bestware incorporates a precision-machined groove at the pipe end together with an O-ring seal.Once the union joint is properly connected and tightened, the O-ring fits securely within the machined groove and against the mating surface. As the O-ring is compressed, it forms a stable seal and helps reduce the risk of leakage.
Machined groove → Precise O-ring positioning → Compression sealing when tightened
This design integrates the sealing function directly into the union joint structure, reducing reliance on PTFE tape while providing a more direct and stable sealing solution.
Common Solutions vs. Bestware
No. | Comparison | Common Solutions | Bestware Design |
1 | Contact surface | Flat contact | Tapered contact surface |
2 | Fit | Relatively limited | Closer fit |
3 | Tightening | Dependent on tightening condition | More secure and less prone to loosening |
4 | Sealing method | PTFE tape for additional sealing | O-ring sealing structure |
5 | Pipe-end design | Conventional structure | Precision-machined groove |
6 | Sealing performance | More dependent on installation | Stable sealing provided by the structure |
Another benefit of the optimized union joint structure is a simpler installation process.Unlike conventional installation methods that require PTFE tape, Bestware does not require the installer to wrap the threads with tape. Simply connect the components correctly and tighten the union joint.
Installation Experience: Common Solutions vs. Bestware
No. | Installation | Common Solutions | Bestware Design |
1 | Installation steps | Wrap PTFE tape → Connect → Tighten | Connect → Tighten |
2 | Operation requirements | Requires proper PTFE tape application | No PTFE tape required |
3 | Installation efficiency | More steps | Fewer steps and faster installation |
4 | Installation consistency | More dependent on installer experience | Simpler and more consistent |
5 | Removal and maintenance | PTFE tape usually needs to be reapplied after disassembly | No need to reapply PTFE tape, making maintenance easier |
No wrapping. No adjustment. Just connect, tighten, and you're done.
For commercial applications involving large-scale installation or frequent use, reducing the number of installation steps can improve installation efficiency while also reducing variations caused by manual operation.

A faucet needs to be designed not only for initial installation, but also for future removal and maintenance.With conventional union joint structures, PTFE tape usually needs to be reapplied after disassembly. With Bestware, there is no need to rewrap PTFE tape, reducing the number of steps required during removal and reinstallation.For applications such as commercial kitchens, where faucets are frequently used, simple installation, secure connections, and easy maintenance can provide a more efficient overall user experience.

A good union joint structure should do more than simply connect components. It should provide secure tightening, reliable sealing, and fast installation.Bestware optimizes both the connection structure and sealing method with a tapered contact surface + precision-machined groove + O-ring seal, reducing reliance on PTFE tape and installation experience.
From flat contact to tapered fitting.
From PTFE tape sealing to structural sealing.
From installation-dependent performance to a stable connection built into the product structure.
That is the design upgrade behind Bestware's union joint structure.