Application of High Temperature and High Pressure Connectors in Oil and Gas Pipelines

Sunkye High Temperature High Pressure Metal Connectors are Widely Applicated in Oil and Gas Field as Seals, and Customized Connectors Meet the Requirement of Different Scenarios.

With economic development, offshore oil and gas development will become a mainstream trend. Subsea oil and gas pipelines are the key to the development of oil and gas resources. Reliable pipeline connectors play a vital role in pipeline connections and subsea oil production systems. As a sealing structure, metal connectors used in pipelines have the advantages of small size, high strength, high toughness, and easy disassembly and assembly.

Submarine pipe diameters are complex, there is fluid in the pipeline, and the connecting equipment in the pipeline is subject to pressure from different directions. As a seal, the high temperature and high pressure resistant connector is below the yield limit compared with the overall stress level. Stress concentration will occur at the corners of the seal, produce deformation, and finally form an effective sealing surface.

In addition, the pressure-resistant connector is the functional unit of the intelligent plugging device in the pipe to achieve high-pressure plugging. In engineering applications, the connector can make the connection of the intelligent plugging device simple and convenient. Sunkye customized HTHP Connectors for petroleum industry, metal shell, with high polymer material, such as PEEK, PAEK, gold-plated contacts for stable signal transmission, air leakage rate is 1x10-3Pa.cm3/s. Not only provide stable performance, it is also the best choice for seals in oil and gas pipelines.

Sunkye's HTHP connector performance:


Test Results

Random vibration

10Hz-2000Hz, 0.3G2 /Hz, acceleration 20G, 200℃ .4h on direction X, Y, Z.


490m2 /s, 11ms

Dielectric withstanding voltage

1000VDC, 60s, leak current≤ 5mA

Normal temperature insulate resistance

≥5000MΩ (500VDC, normal-tem.)

High temperature insulate resistance

≥500MΩ (500VDC, 200℃ )

Rated current

1A continuous current

Temperature range

-55℃ to +200℃

Operating pressure

0 MPa to 172.5 MPa

High temperature life

200℃ ,600h

Temperature shock

-55℃ to +200℃ , 15 cycles, the temperature switching time is ≤ 15 min

Salt spray


Air leak

helium leak test ≤ 1×10-3Pa.cm3 /s

High temperature high pressure

172.5MPa, 200℃ , 336h

Sunkye Connection Technologies provides a wide product portfolio with a complete interconnect solutions offering. Sunkye connectors and cables assemblies are complementary with Sunkye backshells and conduits.