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Type-D
Ninghao
NHFLEX-D TYPE Union Rubber Joint Cast Iron Oil Rubber Expansion Joint
The Union Rubber Joint Cast Iron Oil Rubber Expansion Joint is a high-performance flexible connector specially designed for oil, fuel, and petroleum pipeline systems. Combining a durable oil-resistant rubber body with high-strength cast iron union fittings, this expansion joint delivers excellent sealing, flexibility, and long-term reliability under demanding operating conditions.
It effectively absorbs vibration, axial displacement, and installation misalignment, protecting pipelines, pumps, and valves from stress damage while ensuring safe and stable system operation.
By reducing pipeline stress, preventing leaks, and extending equipment life, the Union Rubber Joint Cast Iron Oil Rubber Expansion Joint delivers outstanding value with minimal maintenance requirements.
Sizes: DN15–DN300 (custom sizes available)
Pressure Rating: PN10 / PN16 / PN25 (or customized)
Rubber Materials: NBR (standard), EPDM / NR optional
Union Material: Cast iron (ductile iron optional)
Temperature Range: −20°C to +120°C (depending on rubber type)

NHFLEX-D TYPE Union Rubber Joint Cast Iron Oil Rubber Expansion Joint
The Union Rubber Joint Cast Iron Oil Rubber Expansion Joint is a high-performance flexible connector specially designed for oil, fuel, and petroleum pipeline systems. Combining a durable oil-resistant rubber body with high-strength cast iron union fittings, this expansion joint delivers excellent sealing, flexibility, and long-term reliability under demanding operating conditions.
It effectively absorbs vibration, axial displacement, and installation misalignment, protecting pipelines, pumps, and valves from stress damage while ensuring safe and stable system operation.
By reducing pipeline stress, preventing leaks, and extending equipment life, the Union Rubber Joint Cast Iron Oil Rubber Expansion Joint delivers outstanding value with minimal maintenance requirements.
Sizes: DN15–DN300 (custom sizes available)
Pressure Rating: PN10 / PN16 / PN25 (or customized)
Rubber Materials: NBR (standard), EPDM / NR optional
Union Material: Cast iron (ductile iron optional)
Temperature Range: −20°C to +120°C (depending on rubber type)

Compensating for Thermal Expansion and Contraction: Rubber expansion joints compensate for thermal expansion and contraction caused by temperature variations in the pipeline. They prevent excessive stress on the pipeline system due to temperature changes, thereby protecting the pipes from damage.
Leak Prevention: Rubber expansion joints provide sealing performance in pipeline systems, reducing the risk of leaks and ensuring the safe operation of the pipelines.

Compensating for Thermal Expansion and Contraction: Rubber expansion joints compensate for thermal expansion and contraction caused by temperature variations in the pipeline. They prevent excessive stress on the pipeline system due to temperature changes, thereby protecting the pipes from damage.
Leak Prevention: Rubber expansion joints provide sealing performance in pipeline systems, reducing the risk of leaks and ensuring the safe operation of the pipelines.

Ningjin NINGHAO Machinery Co.,Ltd. Founded on No November 19, 2010. It is located in No.2 taishan road, econnmic and technological development zone, ningjin county, dezhou city, shandong province. It covers an area of 120 acres, with more than 80 employees, among has all kinds of advanced production and inspection equipment.
We have been in exporting for many years. We have wide business relations in the world. Now the main supply countries: Spain, Italy, Netherlands, Austria, French, Vietnam, India and many other countries. Our customers and clients all think highly of us.



Ningjin NINGHAO Machinery Co.,Ltd. Founded on No November 19, 2010. It is located in No.2 taishan road, econnmic and technological development zone, ningjin county, dezhou city, shandong province. It covers an area of 120 acres, with more than 80 employees, among has all kinds of advanced production and inspection equipment.
We have been in exporting for many years. We have wide business relations in the world. Now the main supply countries: Spain, Italy, Netherlands, Austria, French, Vietnam, India and many other countries. Our customers and clients all think highly of us.



No.2 Taishan Road, Development Zone, Ningjin County, Shandong Province
Phone: +86-15806526381
+86-18561954252
Skype: rubberjoint1
Email: njninghaojixie@163.com