Permanent Puncture Sealing. Continuous Protection.
iSeal® Heavy Duty Tire Sealant is a proprietary, water-based formulation engineered to provide permanent, on-the-wheel puncture sealing and continuous protection against air loss throughout the service life of the tire.
Unlike temporary tire sealants, iSeal® combines specialized fibers, fillers, and a stable liquid carrier to create durable, flexible seals that withstand normal tire movement and operating conditions.
The Four-Step Sealing Process
1. Continuous Distribution
As the tire rotates, iSeal® distributes throughout the interior, providing continuous protection against punctures and air loss.
2. Immediate Puncture Response
When a puncture occurs, escaping air carries specialized fibers and fillers into the opening, where they begin to accumulate and interlock.
3. Permanent Mechanical Seal
Normal tire rotation and flexing compress the fibers and fillers into a durable, flexible, airtight seal without removing the tire from the wheel.
4. Ongoing Protection
Once a puncture is sealed, the remaining iSeal® continues protecting against future punctures, bead and rim leaks, pinholes, and air loss associated with tire porosity.
The Beaver Dam Principle
Think of how a beaver builds a dam. Larger branches establish a foundation, while smaller branches and materials fill the remaining openings until water can no longer pass through.
iSeal® works similarly. Specialized fibers interlock within a puncture while smaller particles fill the remaining spaces. Tire rotation and flexing compress these materials into a permanent, airtight seal.
One Application. Protection for the Life of the Tire.
Proven Performance
| Feature | iSeal® Heavy Duty Specification |
|---|---|
| 2-ply tires | Seals punctures up to ¼ inch |
| 8-ply and higher tires | Seals punctures up to ½ inch |
| Operating temperature | −30°F to 285°F |
| Application | One-time installation |
| Tire compatibility | Tubeless and tube-type |
| Corrosion protection | Contains corrosion inhibitors |
| Shelf life | More than 10 years |
| Liquid-ballasted tires | 1:15 mixture; seals up to approximately ¼ inch |
Sealing performance depends on tire construction, puncture location, operating conditions, and proper application. iSeal® does not restore structural tire damage.
Engineered for Demanding Applications
From agriculture and construction to commercial trucking, industrial equipment, and off-road vehicles, iSeal® helps maintain tire inflation pressure, reduce costly downtime, and extend tire service life.
Protect Your Tires with iSeal®
Protect your equipment, reduce downtime, and extend tire service life with iSeal® Heavy Duty Tire Sealant. Contact iSeal to learn more about product availability and our dealer and distributor network.

