Sealing the deal on
EV battery assembly
We’ll help you optimize your EV battery enclosure sealing
while enabling automation and enhancing serviceability.

Battery enclosure sealing is the linchpin of modern
electric vehicle battery assembly. Unfortunately, many
battery sealants are suboptimal for automation and limit
disassembly and serviceability options.
See how you can enable automation and enhance battery
serviceability with an advanced battery enclosure sealantfrom 3M. Our experts will collaborate bench-to-bench
to help you optimize throughput and achieve your key EV
battery assembly requirements.

The importance of EV battery enclosure sealing
In recent years, electric vehicles have gone from science
fiction to everyday reality for many consumers. Innovations
in cell-to-pack and cell-to-chassis structural pack designs
are increasing energy densities and battery ranges while
reducing design redundancies and controlling production
costs. But despite these advancements, one element
remains constant: the importance of effective and reliable
EV battery enclosure sealant materials.
EV battery enclosure sealing is needed to provide
protection to cells and other electrical components
from water ingression. In today’s compact, high-energydensity designs, even small amounts of moisture cancause electrical shorting and lead to battery damage orfailure. Balancing battery enclosure sealant strength anddurability with requirements for automated assembly, easy
disassembly and serviceability is a fundamental challengeof modern EV battery design.

Optimizing battery sealing through bench-tobench collaboration
Based on extensive customer feedback received by
3M, several key requirements of an effective EV battery
sealant have been identified. Helping boost throughput
while enabling automation is essential, and serviceability
is critical given that conventional sealants (structuraladhesives, foam-in-place gasket sealants) are difficult
to disassemble and limit servicing options. Long term
durability, compression resistance and flame resistance
are all additional requirements cited by a wide range ofOEM customers.
You can achieve robust, durable sealing, cure-in-placecapabilities and serviceability in your EV battery assemblywith 3M™ Sealant SZ1000 for EV Enclosure Sealing.

Our battery experts have worked bench-to-bench withnumerous OEM customers to help optimize throughput,automation and serviceability requirements. 3M canfurther support the automation process by collaboratingclosely with Tier suppliers managing the deck lid
production, as well as with dispensing partners acrossthe globe.

Additional product details
3M™ Sealant SZ1000 for EV Enclosure Sealing is a twopart, cure-in-place, flame retardant, foam, sealing solution
designed for sealing battery packs and other enclosuresin electric and hybrid vehicles. It can be dispensed
automatically and provides robust sealing to help protect
EV batteries against water ingression. It features goodlong term durability and a low compression set of <15%, aswell as a resealable gasket to streamline disassembly andhelp enable battery serviceability.
For more information, please see the Product Detail Page
and Technical Data Sheet.

New sealant in development
3M is developing a novel CIPG solution for EV battery
assembly that cures rapidly at room temperature. It has
potential to help EV OEMs reduce cycle times and handle
the high throughput requirements of the new battery
megafactories being planned globally. Please contact the3M Automotive team to learn more.

Standards and requirements
3M™ Sealant SZ1000 is rated to specification IPX8 forwater protection according to IEC 60529. Compression
set was evaluated according to EN ISO 1856.

We'll help you drive the futureof eMobility.
To learn more visit 3M.com/evbattery.

Intended Use: These products are intended for use in general battery enclosure
sealing in automotive, off-highway, industrial and marine applications. Since
there are many factors that can affect a product’s use, the customer remains
responsible for determining whether the 3M product is suitable and appropriate
for the customer’s specific application and system, including customer conducting
an appropriate risk assessment and evaluating the 3M product in customer’s
application and system.
Restricted Use: 3M advises against the use of this 3M product in any application
other than the stated intended use(s), since other applications have not beenevaluated by 3M and may result in an unsafe or unintended condition.
Technical Information: The technical information, guidance, and other statements
contained in this document or otherwise provided by 3M are based uponrecords, tests, or experience that 3M believes to be reliable, but the accuracy,completeness, and representative nature of such information is not guaranteed.
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sufficient to assess and apply their own informed judgment to the information. No
license under any 3M or third party intellectual property rights is granted or impliedwith this information.
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It is flame retardant in vertical burning tests.

Automotive and Aerospace Solutions Division
3M Center
St. Paul, MN 55144 USA
Phone 1-800-328-1684
Web 3M.com/evbattery

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