Cell and module movement
Cushioning layers help control movement, reduce contact noise and protect components during vehicle operation.
Solutions / EV Battery Pack Sealing
Cushioning and sealing materials for EV battery packs.
BISCOTECH supplies PU foam, silicone foam, EPDM rubber, CR foam and converted parts for battery cells, modules, pack housings, covers and vehicle electronics.
Discuss Your ProjectQuotes in as little as 30 minutes. Same-day drawings and samples.
Application challenge
Battery assemblies need protection without wasting valuable space.
Battery pack sealingEV battery packs combine tight tolerances, vibration, thermal cycling, electrical insulation and long service life. Materials must cushion movement, protect interfaces and fill controlled gaps while fitting the pack geometry.
BISCOTECH helps teams select foam and rubber materials, then converts them into cell pads, module cushions, enclosure gaskets, strips and adhesive-backed parts for prototype and production assembly.
Key pain points
Reliable battery protection depends on fit, recovery and repeatability.
Thermal cycling
Material recovery and dimensional stability matter as the pack experiences repeated heating and cooling cycles.
Electrical protection
Insulating pads and barriers help keep components separated around busbars, connectors and sensitive interfaces.
Production fit
Die-cut shapes, adhesive backing and repeatable tolerances help operators assemble parts consistently at scale.
PU Foam
Silicone Foam
EPDM Rubber
CR FoamMaterial options
Material systems for cell, module and pack protection.
01
PU Foam
For lightweight cushioning, gap filling, anti-rattle pads and adhesive-backed protection inside battery assemblies.
02
Silicone Foam
For temperature stability, compression recovery, flame-retardant cushioning and demanding battery enclosure seals.
03
EPDM Rubber
For resilient sealing, electrical insulation and durable gasket parts around covers, housings and pack interfaces.
04
CR Foam
For mechanical protection, cushioning, oil resistance and flame-retardant requirements in vehicle assemblies.
Typical applications
Where converted parts support EV battery assemblies.
Cell Cushioning PadsControlled compression and spacing between cells and support structures
Module End PadsImpact absorption and anti-rattle protection at module boundaries
Pack Cover GasketsFoam or rubber perimeter seals for battery housing covers
Busbar InsulationDie-cut barriers and insulating pads around electrical interfaces
Cooling Interface SealsCushioning and sealing around cooling plates and service interfaces
Harness and Connector PadsProtection, routing support and vibration control for vehicle electronics
Converting and customization
Designed around your battery drawing and assembly sequence.
BISCOTECH can adjust thickness, density, hardness, adhesive type, liner, roll width and converted geometry to match the pack structure, compression space and production method.
Cell and module die-cut cushioning padsAdhesive-backed foam and rubber partsPack cover gaskets and sealing framesLaminated insulation and cushioning layersPrototype samples from drawings or partsRepeatable production dimensions and formats
Application example
Example: a battery module cushioning pad.
Requirement
A battery module may need a cushioning and sealing part that would fit a narrow gap, reduce movement and remain easy to install.
Proposed approach
Review the drawing, compression space, temperature range, contact surfaces and assembly method, then compare PU foam, silicone foam and rubber options.
Sample validation
Discuss a similar requirement Prepare candidate samples to evaluate fit, compression recovery and adhesive compatibility. Check performance under the intended operating conditions before confirming the material and production format.
FAQ
Common questions about EV battery pack materials.
What material is best for EV battery pack cushioning?
It depends on the gap, compression, temperature, flame-retardant, insulation and recovery requirements. PU foam is often used for lightweight cushioning, while silicone foam, EPDM rubber and CR foam can support more demanding sealing and protection conditions.
Can you make custom battery cell pads and module gaskets?
Yes. We can convert foam and rubber into die-cut pads, sealing frames, strips, adhesive-backed parts, laminated layers and other custom formats for sample validation and production.
What information helps you recommend a battery pack material?
A drawing or sample, target thickness, compression space, temperature range, contact materials, adhesive requirement, estimated quantity and assembly method will help us recommend the right material and converting process.
EV battery projects