Effective all-around – for your safety
PYRO-SAFE® B SX 3201 is a high-performance sealing solution for battery applications where effective fire protection is paramount. In the event of an emergency, it holds back flames, heat and released particulates to prevent their uncontrolled spread. Owing to its intumescent properties and flexibility, the seal reacts precisely to rapid temperature rises, forming a robust fire barrier exactly where it is needed.
PYRO-SAFE® B SX 3201 – Effective protection for the storage and transport of lithium-ion batteries
PYRO-SAFE® B SX 3201 is a customisable fire protection seal that delivers effective protection by intumescent action, thus preventing the release of flames and particles in the event of a battery failure. Designed for use in boxes, cabinets or containers, this advanced sealing solution sets new standards for the safe storage and transport of lithium-ion batteries – thanks to its outstanding pressure stability and water- and gas-tight performance.
Forward-thinking features for modern battery safety
PYRO-SAFE® B SX 3201 is a dedicated fire protection seal offering high pressure stability. This is crucial as in a battery incident such as thermal runaway, high gas pressure, intense heat and harmful particulates can develop within seconds. This pressure acts on all surrounding components – particularly the seal. PYRO-SAFE® B SX 3201 consistently withstands these stresses in every scenario thanks to its robust design.
Pressure stability is an indispensable property of fire protection seals in batteries. It is the essential prerequisite for all-around, gap-free safety, ensuring that gases and liquids are retained during a thermal event – in both directions, outward and inward.
What sets PYRO-SAFE® B SX 3201 apart from other sealing solutions is its specialised design for fire scenarios – precisely tailored to the unique challenges of a battery incident. This specialisation is embodied in its very manufacturing process: the seal is cast in liquid form, rather than extruded under high pressure through a shaping nozzle. This method allows even unconventional seal geometries to be produced seamlessly in a single step.
Moreover, PYRO-SAFE® B SX 3201 offers temperature resistance from -30 °C to +120 °C, making it suitable for both indoor and outdoor applications.
Benefits of PYRO-SAFE® B SX 3201
high pressure stability
watertight and gastight
flexible application in profile shaping
compressible
temperature resistant from -30 °C to +120 °C
suitable for both indoor and outdoor use
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Made for diverse applications in battery safety
PYRO-SAFE® B SX 3201 is suitable for a wide range of applications to enhance lithium-ion battery safety. Typical installation areas include sealing systems for flaps, doors, and lids, as well as pressure-tight closures for component openings and flanges – both indoors and outdoors.
It is precisely in these often unsupervised areas that the seal effectively contains battery incidents and prevents the uncontrolled spread of heat, gases, flames, and particulates.
Intumescence – explained in a nutshell
The PYRO-SAFE® B SX 3201 seal contains expanded graphite, which activates at temperatures around 150 °C to form a solid, highly insulating carbon foam. The seal can thus expand to many times its original size, transforming into a foamed char barrier in flaps, lids and doors of safety cabinets, transport boxes or battery housings. By reliably filling gaps and openings, it not only prevents the escape of flames and particulates, but also reduces the emission of hot gases and smoke.
PYRO-SAFE® B SX 3201 prevents the uncontrolled spread of heat, gases, flames, and particulates.
What is thermal runaway?
Thermal runaway is a self-reinforcing, uncontrollable temperature rise in a battery cell, triggered by an internal chemical reaction (usually a short circuit), which can lead to the breakdown of the cell’s internal components. Temperatures exceeding 1,500 °C can arise within seconds. At the same time, large quantities of flammable gases, flames, smoke, and particulates are released, potentially leading to spontaneous ignition or explosion.
The sudden, localised release of this uncontrolled energy makes battery fires particularly critical. Therefore, safety barriers must withstand this extreme dynamic instantenously – the very moment it strikes.
Safety when it matters most
Transport and storage of lithium-ion batteries pose inherent hazards, as safety-critical events can occur without warning and escalate within seconds. In an emergency, there is no time for an immediate response. This makes integrated protection components – and their superior quality – all the more crucial. PYRO-SAFE® B SX 3201 acts as a reliable fire barrier, intervening just in time to ensure controlled containment of fire, smoke and particulates within boxes, storage cabinets or containers.
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