Expansion Joints

Bridge Expansion Joints by Seismoflex

At Seismoflex Private Limited, we manufacture a wide range of high-quality bridge expansion joints, including Strip Seal, Modular, and Sinus Plate types. These joints are engineered to accommodate thermal expansion, traffic loads, and seismic movements, ensuring long-lasting durability and safe operation for bridges of all sizes. Strip Seal joints provide superior watertight sealing for moderate movements, Modular joints handle large, multi-directional movements with elastomeric seals, and Sinus Plate joints reduce noise and vibration, enhancing both comfort and structural longevity.

Designed and tested to meet IRC and MORTH standards, Seismoflex expansion joints deliver reliable performance, smooth load transfer, and enhanced structural safety. Widely used in highways, railway bridges, metro projects, and civil infrastructure developments across India, our products ensure bridges operate efficiently under diverse conditions while maintaining durability, safety, and long-term performance.

Compression Seal Joints

Seismoflex Compression Seal Joints are premium bridge expansion joint solutions designed to accommodate seismic movements, thermal expansions, and structural shifts while maintaining a watertight seal. Engineered for highways, railway bridges, metro projects, and civil infrastructure, these joints are manufactured using high-quality rubber, neoprene, and steel, ensuring exceptional durability, flexibility, and long-lasting performance under diverse environmental and traffic conditions.

Key Features:

Seismic Movement Accommodation: Perfect for areas prone to earthquakes or heavy structural stress. Capable for maximum movement upto 0-40mm

Watertight Seal: Prevents water ingress, protecting the structure from damage.

Durable Materials: Made with neoprene rubber, EPDM, or steel, ensuring long-term resistance to wear and tear.

Flexible Design: Can handle expansions and contractions caused by temperature changes or dynamic loads.

Customizable Sizes: Available in dimensions like 100x100x10mm and thicknesses up to 60mm, tailored for specific project needs.List item

Strip Seal Joints

Seismoflex Strip Seal Joints are high-performance bridge expansion joints designed to accommodate movements up to 80 mm while providing a watertight seal and long-term durability. Ideal for bridges, flyovers, highways, and other infrastructure projects, these joints feature a continuous elastomeric gland securely held between steel edge profiles, ensuring reliable performance in managing structural movements caused by temperature variations, traffic loads, and seismic activity.

Key Features:

Watertight Protection: The elastomeric strip prevents water, debris, and contaminants from seeping through, safeguarding the structure.

Durability: Engineered for a lifespan of over 25 years, even under heavy vehicular loads and harsh weather conditions.

Replaceable Seal: The elastomeric gland can be replaced without removing the steel edge beams, making maintenance super convenient.List item

Corrosion Resistance: Steel edge profiles are treated with sandblasting and spray painting to enhance durability.List item

Flexibility: Accommodates both vertical and horizontal movements while maintaining structural integrity.List item

Sinus Plate Expansion Joints

Seismoflex Sinus Plate Expansion Joints – Premium bridge expansion joint systems designed to handle dynamic traffic loads while reducing noise and vibrations. Featuring integrated sinus plates, these joints enhance durability and minimize noise by up to 80%, making them ideal for urban infrastructure, highways, and high-traffic bridges.

Key Features:

Noise Reduction: The sinus plates dampen vibrations caused by vehicles, ensuring a quieter experience for nearby areas

High Movement Capacity: These joints can accommodate movements up to 100 mm, perfect for bridges and structures with significant thermal expansion or seismic activity.

Durability: Constructed with robust steel edge profiles and replaceable elastomeric sealing profiles, they are built for long-term use under heavy traffic.List item

Watertight Seal: Prevents water infiltration, protecting the underlying structure from damage.List item

Modular Expansion Joints

Seismoflex Modular Expansion Joints – Heavy-duty bridge expansion joints engineered for structures requiring large movement capacity and seamless load transfer. Ideal for highways, railway bridges, metro projects, and infrastructure, these joints accommodate thermal expansion, seismic movements, and traffic-induced stresses while ensuring long-lasting structural integrity and durability.

Key Features:

Multi-Axis Movement: Handles movement in longitudinal, transverse, and vertical directions, making them versatile for complex infrastructure projects.

Customizable Modules: Modular design allows adjustment to specific project requirements, whether it’s movement range or load capacity.

Durable Materials: Engineered with steel edge beams and high-quality elastomeric seals to ensure long-term performance under heavy loads.

Noise and Vibration Reduction: Designed to minimize noise and vibrations caused by vehicular traffic, ensuring smoother operations in urban environments.

Watertight Seal: Prevents water ingress, protecting the structure from corrosion and wear.

Slab Seal Expansion Joints

Seismoflex Slab Seal Expansion Joints are high-performance bridge expansion joints designed to accommodate large movements and load variations in bridges, flyovers, and highways. Engineered for thermal expansion, traffic loads, and seismic activity, these joints provide watertight sealing, smooth load transfer, and long-term durability. Ideal for urban infrastructure and high-traffic bridges, they ensure structural integrity and safety under diverse conditions.

Key Features:

High Movement Capacity – Accommodates large translations and rotations caused by traffic and thermal expansion.

Watertight Design – Prevents water ingress, protecting bridge structures from corrosion and damage.

Durable Materials – Constructed with premium rubber, neoprene, and steel for long-lasting performance.

Seismic Resistance – Designed to handle seismic forces while maintaining structural stability.

Low Maintenance – Self-lubricating and corrosion-resistant components ensure minimal upkeep.

Railway Expansion Joints

Seismoflex Railway Expansion Joints are precision-engineered bridge expansion joints designed to accommodate high-speed rail movements, thermal expansion, and dynamic loads while ensuring smooth and safe operation of railway bridges. Engineered for durability, load transfer efficiency, and structural integrity, these joints minimize vibrations, reduce noise, and withstand heavy train loads, making them ideal for railway infrastructure, metro projects, and high-traffic rail bridges.

High Load Capacity – Designed to handle heavy railway traffic and dynamic forces.

Smooth Load Transfer – Ensures even distribution of loads to protect bridge structure.

Durable Construction – Built with premium steel and elastomeric components for long service life.

Seismic and Thermal Resistance – Accommodates temperature variations and seismic movements.

Noise and Vibration Reduction – Minimizes impact noise for enhanced passenger comfort and bridge longevity.

We Provide the Best Service in Industry

Trusted by highways, railways, and metro projects across India for durable and reliable bridge products. Get in touch today for the right solution.

Expansion Joints​