JIC 37° Flare Hydraulic Fittings Plug
THP
JIC 37-degree Flare Hydraulic Fittings Plug
The function of the JIC 37-degree Flare Plug is to seal and close the end of a hydraulic fitting or pipeline that uses a 37-degree flare connection. It serves the following purposes:
1. Leak Prevention: It provides a secure seal to prevent fluid leakage from the open end of a fitting or system.
2. System Protection: The plug protects the fitting or hydraulic system from contaminants such as dirt, debris, or moisture when not in use or during transport.
3. System Maintenance: It can be used during maintenance or testing of hydraulic systems to isolate specific sections while maintaining system integrity.
Overall, the JIC 37-degree Flare Plug is a key component for sealing and protecting hydraulic systems with 37-degree flare fittings.
JIC 37-degree Flare Hydraulic Fittings Plugs are made of stainless steel. One end is taper seat with UN/UNF thread to connect crimp hose fittings or JIC 37-degree swivel female fittings. Plugs are generally used to close the tube in case of routine examination or maintenance.
Features
- Taper design to reach Leak-free and Crack resistance.
- Heat resistance, impact resistance, corrosive resistance, and high temperature resistance.
Technical Data
Working Temperature: 210 kgf/cm²
Suitable OD (37°): 1/4 ~ 2 Inch
Thread: PT, NPT, UNF 1/4 ~ 2 Inch
Application
- Suitable for Machine Tools, Agricultural and Heavy-Duty Machinery, Instrumentation, Connection Between Chemical Processing Systems and Hydraulic Fluid and Gas Processing.
Dimension

Specification
THP JIC 37° Flare Hydraulic Fittings Plug| Part No | Tube OD | Thread Size | Dimensions | ![]() |
|---|---|---|---|---|
| Ø | T-UN/UNF | L | ||
| THP02H | 1/4" | 7/16" x 20 | 20 | 14 |
| THP03H | 3/8" | 9/16" x 18 | 21 | 17 |
| THP04H | 1/2" | 3/4" x 16 | 24 | 19 |
| THP05H | 5/8" | 7/8" x 14 | 26 | 23 |
| THP06H | 3/4" | 1-1/16" x 12 | 29 | 27 |
| THP08H | 1" | 1-5/16" x 12 | 32 | 35 |
| THP10H | 1-1/4" | 1-5/8" x 12 | 36 | 46 |
| THP12H | 1-1/2" | 1-7/8" x 12 | 38 | 50 |
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JIC 37° Flare Hydraulic Fittings Plug (THP ) – CHIBIN Machine
Since 1980 in Taiwan, CHIBIN Machine makes JIC 37° Flare Hydraulic Fittings Plug —compression, push-in pneumatic, hydraulic, quick couplings, and precision nozzle and needle valves for medical and semiconductor use.
Our fittings are ISO-certified and TTQS-awarded, with MIL-STD-105E quality checks. We stock 10,000+ standard parts and offer OEM/ODM custom runs up to 3,000 pcs.
With advanced CNC manufacturing and 40+ years of experience, CHIBIN Machine meets tight specs for surface finish, thread standards, and leak-tight testing. Get a fast quote today.


