Mechanic looking at engine from under the hood

Under the hood  

Improve the performance and cost-effectiveness of under-the-hood automotive components with thermoplastic vulcanizates, EPDM rubber and butyl rubber, and polypropylene.

Applications and benefits

Rely on Vistalon™ ethylene propylene diene (EPDM) rubber in automotive coolant, air and heater hoses, as well as AC and brake hose formulations to achieve:

  • High tear strength
  • High temperature and long-term aging resistance
  • Excellent flexibility
  • Easy mixing and processing

Common industry uses include:

  • General purpose hose
  • Heat-resistant hose
  • High-heat-resistant hose
  • Brake hoses

Recommended products:

Vistalon ethylene propylene diene (EPDM) rubber is a copolymer specifically engineered for use in industrial power transmission drive belts.

Developed for peak performance, specifically in the grinding manufacturing process, Vistalon™ 706 EPM offers good tear strength and flex-crack resistance. It outperforms chloroprene rubber in heat aging resistance and is a lower-cost alternative to hydrogenated nitrile rubber.

Key benefits include:

  • Extended belt lifetime in a high-temperature environment
  • High load to sustain startup
  • High resistance to pulley clogging
  • Quieter running

Recommended products:

Rack and pinion steering boot suppliers around the world rely on Santoprene thermoplastic vulcanizates (TPVs) as tough, chemical- and grease-resistant materials that maintain their flexibility across a wide range of extreme temperatures and road conditions.

Key benefits include:

  • Low weight and tight dimensional tolerances
  • Outstanding sealability
  • Excellent flex fatigue
  • Processing ease and recyclability

Recommended products:

Excellent sealing properties, durability, and chemical and heat resistance make Santoprene thermoplastic vulcanizates (TPVs) lightweight, cost-effective replacements for conventional EPDM and chloroprene rubber materials in demanding under-the-hood air induction systems.

Key benefits include:

  • Cost savings through consolidation – Santoprene TPVs deliver cost-saving opportunities to consolidate or eliminate parts, such as metal fasteners, through a combination of:
    • Excellent bonding properties
    • Suitability for a variety of one- and two-component blow-molding processing
    • Compatibility with polypropylene (PP), polyamide and other thermoplastic substrates
  • Durable and efficient – Santoprene™ TPV 101-87 and 103-40, 50 grades are suitable for outside and clean air induction applications where durability and -40°C to 135°C (-40°F to 275°F) temperature resistance are essential. Manufacturers gain design freedom because components made from TPVs and PP can be created using monolayer or sequential 3-D extrusion blow molding or injection molding.
  • Attractive and recyclable – The attractive Santoprene TPV finish complements new under-hood aesthetics. Santoprene TPV offers the potential for in-process and end-of-life recyclability.

Recommended products:

ExxonMobil™ PP is designed for high-performance automotive and other battery case applications.

Key benefits:

  • Enhanced product performance
  • Good heat and UV resistance
  • Cost reduction opportunities
  • Distinct ivory appearance

Recommended products:

ExxonMobil PP

Exxtral™ performance polyolefins provides lightweight opportunities compared to current commercial grades for heating, ventilation and air conditioning (HVAC) applications. 

Recommended products: 

Product solutions

  • Composite of car, race car and kitchen on black background

    Santoprene™ TPV

    Santoprene™ thermoplastic vulcanizates (TPV) are dependable polymers for flexible engineered parts that require long-term performance.

    Learn more
  • ExxonMobil Chemical EDPM rubber production from Al-Jubail Chemical Complex

    EPDM rubber

    Vistalon™ ethylene propylene diene (EPDM) rubber is used in a wide variety of applications, offering processing and finished product performance beyond the capabilities of natural and general-purpose synthetic rubbers.

    Learn more
  • Girl with iced coffee in plastic cup

    ExxonMobil™ PP

    Benefit from excellent performance and value with our engineered homopolymers, impact copolymers and random copolymers.

    Learn more
  • x-ray car glowing

    Exxtral™ performance polyolefins

    Enable value chain creativity and meet the evolving automotive needs of the European market via tailored solutions, collaboration, high quality and security of supply.

    Learn more
  • Rethink what's possible using Achieve advanced PP

    Achieve™ Advanced PP

    Challenge reality and rethink what’s possible in automotive performance, packaging design, hygiene comfort and appliance appeal.

    Learn more

Featured resources

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

    Rubber & Plastics News

    Read Kurt Aerts interview in Rubber & Plastics News and learn how the company has been at the forefront of rubber and elastomer innovation from the very beginning.

    Read more
  • ExxonMobil Chemical Page

    TPV fluid resistance guide

    Our powerful and easy-to-use tool to find TPV fluid and chemical resistance fast.

    Use the tool
  • ExxonMobil Chemical Library icon

    High performing, yet appealing battery cases

    ExxonMobil™ AP3AW impact copolymer (ICP) polypropylene (PP) resin is designed for high-performance automotive and other battery case applications.

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  • ExxonMobil Chemical Library icon

    Meeting next-generation car requirements with advanced automotive compounds – AP portfolio

    ExxonMobil™ impact copolymer (ICP) polypropylene (PP) resins are helping the automotive industry meet next-generation car requirements for high-quality and improved sustainability.

    Read more
  • ExxonMobil Chemical Library icon

    Santoprene™ TPV delivers outstanding performance and cost reduction for steering boots

    Case story highlighting how Santoprene thermoplastic vulcanizate (TPV) reduces cost and improves performance of steering boots.

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  • ExxonMobil Chemical Library icon

    Santoprene™ TPV reduces weight of air ducts for new Hyundai vehicle platforms

    Case story highlighting how Santoprene thermoplastic vulcanizate (TPV) is used for low-weight short air ducts in the new Hyundai vehicle platforms.

    Read more
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