The time it takes for ozone to damage rubber depends on several factors such as ozone concentration, environmental conditions, type of rubber and manufacturing process, etc. In general, ozone-damaged rubber develops gradually over time, and the exact timing varies.

Here are some key factors that affect how long it takes for ozone to damage rubber:

1. Ozone concentration: The higher the ozone concentration, the faster the rubber will be damaged. In the atmosphere, ozone concentrations are low and generally do not cause rapid rubber damage. However, in some industrial environments or special applications, the ozone pollution may be higher, and the damage speed of the rubber may be faster.

2. Temperature and Humidity: The rate at which ozone damages rubber generally increases with increasing temperature and increasing humidity. The environment of high temperature and high humidity will accelerate the chemical reaction and decomposition process, thus aggravating the effect of ozone on rubber.

3. Rubber type and manufacturing process: Different types of rubber have different chemical structures and anti-ozone properties. Some rubbers are more resistant to ozone, while others are more susceptible to damage. In addition, the manufacturing process of rubber products may also affect its anti-ozone performance, such as adding antioxidants and ozone stabilizers.

To sum up, there is no fixed and accurate answer to the time for ozone to damage rubber, but is affected by many factors. In general, ozone damage to rubber products can take months to years under typical environmental conditions. However, factors such as higher ozone concentrations, temperature and humidity may accelerate the damage process. In order to prolong the service life of rubber, measures can be taken, such as using anti-ozone rubber materials, adding antioxidants and ozone stabilizers, and avoid exposing rubber to high ozone environments or extreme weather conditions.