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NAV Modular Strip Seal Joint

Modular Seal Expansion Joints
Applicable Standard: IRC:SP:69-2011
Modular strip seal joint comprises multiple strip seals supported on transverse steel centre beams travelling on support bars and control springs, distributing large total movement across several smaller gaps, as per IRC:SP:69-2011.

Parameter Specification / Typical Range
Movement Capacity ± 160 mm up to 1000+ mm (multi-seal, modular)
Centre Beams Structural steel conforming to IS:2062, precision machined
Seal Elements CR / EPDM strip seals, as per strip seal joint specification
Support System Elastomeric / PTFE sliding bearings with control springs
Watertightness As per IRC:SP:69-2011 test requirement

Key Features

Accommodates very large total movement
Modular construction permits individual seal replacement

Typical Applications

Long-span bridges, major river bridges, high-movement structures
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