INCA INSS1440 Fire Barrier Caulk

INCA INSS1440 Fire Barrier Caulk



INCA INSS1440 Fire Barrier Caulk: A Comprehensive Overview

INSS1440 Fire Barrier Caulk is a high-performance, acrylic-based firestop sealant designed to seal gaps in various through-penetrations. This sealant boasts a fire rating of up to 3 hours, making it an essential component in fire safety measures for buildings and other structures.

Key Features and Benefits

  1. Acrylic-Based Composition:

– The acrylic base ensures strong adhesion to a wide range of substrates.

– It provides flexibility, allowing for movement within the sealed joints without compromising the seal’s integrity.

  1. Fire Rating:

– INSS1440 offers a fire rating of up to 3 hours. This means that in the event of a fire, the caulk can effectively prevent the spread of flames and smoke through sealed gaps for this duration, providing critical time for evacuation and fire response.

  1. Radiation Resistance:

– One of the standout features of INSS1440 is its resistance to high levels of neutron and gamma radiation. It can withstand exposure to 1×10^6 Gy (1×10^8 rad) without losing its firestop capabilities.

– This makes it suitable for use in environments with high radiation levels, such as nuclear power plants and research facilities.


INSS1440 is versatile and can be used in various applications, including:

– Electrical Penetrations: Sealing gaps around cables and conduits to prevent fire spread.

– Mechanical Penetrations: Ideal for sealing around pipes and ductwork.

– Wall and Floor Joints: Ensuring firestopping in expansion joints and other structural gaps.

Installation and Usage

– Surface Preparation: Ensure surfaces are clean, dry, and free from debris and contaminants.

– Application: Apply the caulk using a standard caulking gun. Smooth the sealant with a tool to ensure proper adhesion and a smooth finish.

Curing Time: Allow the caulk to cure according to the manufacturer’s instructions before exposing it to fire or radiation.

Performance Under Radiation

– INSS1440’s ability to maintain its firestop function under intense radiation exposure (1×10^6 Gy) is a testament to its durability and reliability in extreme conditions.

– This feature is particularly beneficial in industries where radiation is a significant concern, ensuring fire safety and compliance with stringent safety regulations.

INSS1440 Fire Barrier Caulk is a reliable and effective solution for firestopping needs, offering robust performance in standard and high-radiation environments. Its high fire rating and exceptional radiation resistance make it ideal for a wide range of applications, ensuring safety and compliance in critical infrastructure.

Specifications Summary

– Base: Acrylic

– Fire Rating: Up to 3 hours

– Radiation Resistance: 1×10^6 Gy (1×10^8 rad)

– Applications: Electrical and mechanical penetrations, wall and floor joints

– Installation: Requires clean, dry surfaces; standard caulking gun for application

For more detailed information or specific installation guidelines, please refer to the product datasheet or contact us at



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