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Specialty elastomer for tire innerliners  

Exxpro™ 3563 specialty elastomer is the world’s most advanced material for tire innerliners. Compared to halobutyl rubbers, Exxpro 3563 delivers step-change improvement in air retention, lowering in-use rolling resistance, energy consumption and emissions. Bladder and envelope Exxpro grades also available.

Specialty elastomer for tire innerliners


Tire performance for the new mobility

Mobility is changing around the world. Are you keeping up? You can quickly and affordably produce high-performance tires that meet the challenges of today’s evolving demands with Exxpro™ 3563 specialty elastomer – the world’s most advanced material for innerliners1.


Compared to the global average 80% halobutyl (HB)*/20% natural rubber (NR) innerliner blend, Exxpro 3563 delivers:

  • 12% improvement in in-use rolling resistance
  • 20-50% improvement in air retention


As mobility cultures evolve, tires that meet the next level of performance can gain a greater share of the market. Don’t be left behind. Tap into our test data and technical expertise, as well as initial formulations, to save time and money while developing next-generation tires that can boost your business. 

*HB acronym includes both bromobutyl and chlorobutyl



Key benefits

  • tire durability

    Improve tire durability and performance

  • specifications list

    Meet more stringent OEM specs

  • emissions expansion

    Meet expanding emissions and fuel efficiency regulations

  • battery saver

    Improve in-use energy consumption (fuel or battery)

  • future and electric vehicles

    Meet the demands of electric and future vehicles and evolving driving cultures

    Learn more
  • Lead by meeting tomorrow’s needs today

extensive tire testing
connect to improve business

Advanced chemistry. Advanced performance

Inclusion of high p-methyl styrene concentrations leads to lower segmental mobility and lower free volume, resulting in significant permeability reduction compared to halobutyl rubbers.
polymers image

Compound consistency

Compared to halobutyl, Exxpro™ 3563 provides compound consistency advantages:

  • Ease of manufacturing: lower heat shrinkage, higher green strength and good tack
  • Greater production output: better filler dispersion
  • Better air retention: reduced segmental mobility and bulky hpMS
comparison of polymers

tire air retention

Industries and applications

Featured resources

View highlighted news, events, technical papers and case studies below. To see our full collection of resources, browse our Library.
  • ExxonMobil Chemical play button icon

    Video: Proper air retention can make all the difference

    It’s the everyday moments that can easily go from simple to complex, good to bad, or economical to expensive – simply due to tire inflation. ExxonMobil halobutyl tire innerliners help to keep the air in your tires.

    Watch the video
  • ExxonMobil Chemical play button icon

    Video: Air retention

    We keep the air in your tires and the good times rolling.

    Watch the video
  • ExxonMobil Chemical Library icon

    Airing a problem with tire safety and performance

    Jeffrey Valentage, Global Tire Market Development Manager at ExxonMobil Chemical, explores an often neglected element that ensures the long-term safety and performance of tires. This article is available in English only.

    Read more
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1. Compared to halobutyl rubbers

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