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Tire Solutions
Technology that keeps your wheels turning
Tire technology for a safer, more reliable ride
Advanced protection. Lighter weight. Designed for modern mobility.
Innovation and sustainability from a trusted brand with 80 years of demonstrated performance.
SILASTIC™ Self-Sealing Silicone is a soft, flexible, two-part sealant that creates a thin protective layer inside the tire. When a puncture occurs, the sealant helps seal the puncture path around the object and helps maintain tire pressure once it’s removed, delivery safety, convenience, and sustainability.
From puncture to protection, silicones seal the deal
A tire puncture is both inconvenient and unsafe. But what if a flat tire was a thing of the past? With Dow’s SILASTIC™ SST-8860 Self-Sealing Silicone, the enhanced performance, safety and durability of tires is not only possible but achievable. Easier to process and simpler to use, SST-8860 has demonstrated reliable self-sealing performance across a wide range of tire applications and operating conditions, so manufacturers, drivers and passengers alike can rest easy knowing the road is a much safer place to be.
SILASTIC™ SST-8860
A two-part, ambient curing elastomer designed for self-sealing tire technology. It forms a durable, self-sealing layer on the inner tire surface, providing reliable puncture sealing and extended drive capability without air pressure loss.
Solutions by application
Passenger cars, SUVs & Light trucks
For everyday light-duty driving, SILASTIC™ self-sealing silicone supports a thin, lightweight tire design that helps preserve handling and ride comfort while reducing reliance on a spare tire.
Two-wheelers, Scooters & E-bikes
Across daily commutes, city streets and varied road conditions, SILASTIC™ self-sealing silicone helps riders stay mobile after punctures.
Military Vehicles & Off-road
For vehicles exposed to demanding conditions, SILASTIC™ self-sealing silicone maintains stable viscoelastic properties across a broad temperature range, supporting consistent sealing performance.
Key Benefits of SILASTIC™ Self-sealing Silicone
Consistent tire performance across a broad temperature range of -40 °C to 100°C, with continued/extended mobility after puncture and excellent sealing durability.
Avoid laser precleaning of tire, saving 90 seconds per tire and labour savings. Room temperature cure, low energy process, with no pre-compounding required.
5x faster than butyl coating application using standard equipment. Room temperature, low odor application with soft & flexibility, high tack to many substrates, and no-sag after application.
Ability to separate material from tires at end of life enables efficient recycling of both tires and silicon in separate waste and streams.
Lightweight sealant enables 85% reduction per tire vs. standard run flat insert, improving lightweighting and fuel efficiency by eliminating spare tire. Repairability supports product performance over time.
Helps maintain gas tightness with a thin sealant layer, even under busy road or harsh weather conditions.
SILASTIC™ SST-8860: Frequently Asked Questions
SILASTIC™ Self-Sealing Silicone provides reliable puncture sealing and extended mobility after punctures while requiring only a thin sealant layer. Unlike run-flat systems, it does not require reinforced sidewalls and can help eliminate the need for a spare tire, supporting reduced vehicle weight, improved efficiency, and greater design flexibility.
Designed as a thin, flexible inner layer, SILASTIC™ Self-Sealing Silicone helps maintain handling performance, ride comfort, and low noise characteristics comparable to tires without a coating.
SILASTIC™ SST 8860 is engineered to deliver reliable sealing performance across a broad temperature range, helping maintain consistent tire performance in both hot and cold operating environments. The reliable sealing performance across a broad temperature ranges from -40°C to 100°C.
At end of life, the silicone layer can be separated from the tire, enabling efficient material recovery and supporting the recycling of both tire and silicone materials in separate waste streams.
Only a thin silicone layer is required to deliver effective puncture sealing, air retention, and long-term sealing durability, helping minimize material use while maintaining performance.
No. SILASTIC™ SST 8860 is designed to work with standard tire manufacturing processes and does not require pre-cleaning or laser cleaning of the tire surface prior to application.
No. SILASTIC™ SST 8860 is supplied as a two-part system designed for standard dosing, mixing, and dispensing equipment, eliminating the need for pre-compounding.
SILASTIC™ SST 8860 cures at ambient temperature, enabling efficient manufacturing without the need for dedicated heat-curing steps. Cure can also be accelerated with heat if required by the manufacturing process.
SILASTIC™ SST 8860 is compatible with a wide range of tire applications, including passenger vehicle, light truck, off-road, and micromobility tires.
SILASTIC™ SST 8860 is primarily designed to form a self-sealing layer on the inner tire surface to protect against punctures in the tread area. For certain specialty applications, such as off-road tires, sidewall application may also be considered based on tire design requirements.
Questions about Dow Mobility products and capabilities? Get in touch with a representative.
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