Carlisle TyrFil is celebrating the 50th anniversary of its signature TyrFil brand this year, a polyurethane tire fill material intended to flatproof tires.

Carlisle says TyrFil enables OTR equipment to literally glide over typical worksite debris that would otherwise leave machinery vulnerable to tire punctures.

TyrFil can be pumped into any pneumatic tire to replace all of the air with a synthetic elastomer core that eliminates flats and offers shock absorption. Despite cuts and punctures, filled tires will keep performing, the company says.

Since 1971, the company says its facilities have processed over 1 billion lbs. In 2021, Carlisle TyrFil says it introduced the latest extension to its Recycling Technology lineup to further drive adoption of sustainable manufacturing practices within the OTR tire industry. The new patented AutoFil-GenII processing pump can mix virgin tire fill with rubber crumb, PU grind, or both rubber crumb/PU grind.