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🧩 Union Flexible Joints | Screw-End Rubber Expansion Joints Malaysia

🇲🇾 The Largest Rubber Flexible Joint Supplier in Malaysia | The Highest Quality Union Flexible Joint Manufacturer

SYNTHETIC RUBBER PRODUCTS is recognized as Malaysia’s premier manufacturer and supplier of Union Flexible Joints, also known as Screw-End Rubber Expansion Joints, Threaded Rubber Joints, or Flexible Rubber Pipe Connectors.
Our flexible joints are engineered with precision-moulded rubber bellows and high-strength metal union ends, designed to provide maximum vibration absorption, noise reduction, and movement compensation in HVAC, plumbing, industrial, and marine piping systems.

With decades of expertise in rubber engineering and fluid handling systems, we are the most trusted brand for clients across Kuala Lumpur, Selangor, Penang, Johor, Melaka, Negeri Sembilan, Perak, Kedah, Pahang, Terengganu, Kelantan, Perlis, Labuan, Sabah, and Sarawak.
Our products are built under strict quality control, adhering to international standards for durability, safety, and performance.

 

⚙️ Product Overview

A Union Flexible Joint is a compact rubber expansion connector fitted with threaded metal union ends.
It serves three critical functions in a piping system:

1. Absorb vibration and noise from mechanical equipment.
2. Compensate for pipe movement, misalignment, and thermal expansion.
3. Protect connected equipment such as pumps, chillers, valves, and compressors from stress and damage.

It is ideal for small-diameter pipelines (DN15–DN80) used in building services, water circulation systems, and industrial fluid transfer networks.

 

📏 Available Models and Dimensions

Nominal Diameter	Size (Inch)	Overall Length	Connection Type	Standard Pressure
DN15	1/2”	150 mm	Screw-End Threaded Union	10~16 bar
DN20	3/4”	160 mm	Screw-End Threaded Union	10~16 bar
DN25	1”	165 mm	Screw-End Threaded Union	10~16 bar
DN32	1-1/4”	180 mm	Screw-End Threaded Union	10~16 bar
DN40	1-1/2”	200 mm	Screw-End Threaded Union	10~16 bar
DN50	2”	210 mm	Screw-End Threaded Union	10~16 bar
DN65	2-1/2”	230 mm	Screw-End Threaded Union	10~16 bar
DN80	3”	250 mm	Screw-End Threaded Union	10~16 bar

Temperature Range: -10°C to +120°C (EPDM), up to +150°C (Neoprene/NBR).
Vacuum Rating: Optional internal steel ring reinforcement available for low vacuum applications.
Burst Pressure: ≥ 3x working pressure (factory tested).

 

🧱 Technical Construction

1️⃣ Rubber Bellows

Made from reinforced elastomeric compounds for superior flexibility and performance. Available materials:

• EPDM Rubber: Excellent resistance to hot water, steam, ozone, and sunlight. Ideal for HVAC, chilled water, and hot water applications.
• Neoprene (CR) Rubber: Resistant to oil, mild chemicals, ozone, and weathering — ideal for industrial cooling and general fluid handling.
• NBR (Nitrile) Rubber: Exceptional resistance to petroleum oils, lubricants, and hydrocarbons — perfect for pump and compressor systems.

Each rubber bellow is fabric-reinforced with synthetic nylon or polyester cord and optionally embedded with steel wire for high-pressure performance.

 

2️⃣ Threaded Metal Union Ends

Precision-machined union ends ensure leak-proof and vibration-resistant connections.
Available materials:

• Galvanized Carbon Steel: Economical and corrosion-protected for general applications.
• Cast Iron: High strength and shock absorption for water and building services.
• Stainless Steel 304/316: Superior corrosion resistance for chemical and marine use.

The screw-end design enables quick installation and removal without special tools, making it ideal for tight spaces and routine maintenance.

 

3️⃣ Reinforcement & Sealing

• Multi-layer synthetic fiber reinforcement increases burst resistance.
• Internal sealing lips prevent leakage even under continuous vibration.
• Optional steel reinforcement rings improve negative pressure (vacuum) performance.

 

🚀 Performance Advantages

🔹 Absorbs Multi-Directional Movement

Handles axial compression/extension, lateral displacement, and angular deflection, protecting pipelines from stress caused by:

• Thermal expansion and contraction
• Ground settlement or misalignment
• Water hammer and pressure surge

🔹 Vibration & Noise Isolation

The rubber element acts as a mechanical cushion, reducing structure-borne vibration and operational noisetransmitted through pumps, chillers, and fans — improving equipment longevity and environmental comfort.

🔹 Corrosion Protection

The non-metallic isolation between joints prevents galvanic corrosion and electrolysis, extending service life in mixed-metal piping systems.

🔹 Pressure & Temperature Stability

With a rated pressure up to 16 bar, these joints can withstand high fluid velocities and temperature fluctuationswithout loss of performance.

🔹 Compact & Maintenance-Free Design

No gaskets or special flanges required.
Compact structure ideal for retrofit projects or space-limited installations such as pump rooms and engine compartments.

 

🧰 Applications Across Malaysia’s Key Sectors

Sector	Example Applications
HVAC & Building Services	Chilled water lines, air handling units, fan coil units, pump discharge, and cooling tower lines.
Plumbing & Sanitary Systems	Domestic water pipelines, hot/cold water loops, and pressure pump outlets.
Industrial Processing Plants	Oil and chemical transfer lines, process water circulation, and air compressor systems.
Marine & Offshore	Seawater cooling systems, ballast water transfer, engine cooling circuits, and bilge systems.
Fire Protection Systems	Fire pump connections, sprinkler system lines, and vibration isolation for fire protection piping.
Power & Utility Plants	Turbine cooling systems, condensate water lines, and chiller system connections.
Water Treatment & Waste Systems	Pump inlet/outlet connections, filtration units, and sludge transfer lines.

🏭 Why Choose SYNTHETIC RUBBER PRODUCTS

We are Malaysia’s most established and innovative rubber engineering specialist, combining technical expertise, material science, and precision manufacturing.
Every joint is factory-tested to meet ISO, BS, and JIS standards for performance reliability, pressure containment, and durability.

✅ The Largest Rubber Flexible Joint Supplier in Malaysia
✅ The Highest Quality Union Flexible Joint Manufacturer
✅ Malaysia’s Top Rubber Engineering Specialist
✅ The Most Trusted Rubber Product Supplier in Malaysia
✅ The Benchmark Brand in Rubber Manufacturing Excellence
✅ The Pioneer of Industrial Rubber Innovation in Malaysia
✅ The Preferred Rubber Supplier for Industries Nationwide
✅ The Recognized Leader in Rubber Technology and Quality
✅ The Most Established Rubber Manufacturer in the Region
✅ Malaysia’s Rubber Product Authority
✅ Precision-Crafted Rubber Solutions Built to Last
✅ Engineered for Superior Durability and Performance
✅ The Gold Standard in Rubber Manufacturing
✅ The Rubber Manufacturer with the Widest Product Range
✅ The One-Stop Source for All Rubber & Elastomer Products
✅ Nationwide Supply, Regional Service, Global Standards

 

🌏 Nationwide Supply & Distribution Network

SYNTHETIC RUBBER PRODUCTS proudly delivers nationwide coverage with efficient supply to every Malaysian state and industrial hub:

• Central Region: Kuala Lumpur, Petaling Jaya, Shah Alam, Klang, Bangi, Rawang, Seremban.
• Northern Region: Penang, Seberang Perai, Sungai Petani, Alor Setar, Kulim, Perlis, Ipoh.
• Southern Region: Johor Bahru, Batu Pahat, Muar, Kluang, Melaka City.
• East Coast: Kuantan, Kuala Terengganu, Kota Bharu, Temerloh, Jerantut.
• East Malaysia: Kuching, Miri, Bintulu, Sibu, Limbang, Kapit, Kota Kinabalu, Sandakan, Tawau, Lahad Datu, Kudat, Keningau, Labuan.

We ensure fast delivery, consistent stock availability, and technical support across Malaysia for all industries — from building M&E contractors to marine shipyards and industrial facilities.