1.Snap-in Tubeless Rubber Valves 
2.Cold,Heat and Ozone Resistant 
3.tensile force >600N 

1. TR423 is made of brass stem ,core valve and Special Formula rubber. in order to resist to O-zone Damage and Prevent temperature deterioration caused by rim hole, heat, cold.

Maxium Inflation is 420k Pa (60P S. I)

2. tensile force >600-700N

3. Cold,Heat and Ozone Resistant

4. Our products are 100% leak tested , exporting to USA around 20 years,never leaking happened.