Are you talking about physical damages to hardware wallets?
In case your device malfunctions and it is still under warranty you can contact the customer support, explain your problem and you will likely get a replacement device.
Ledger has even sent replacement devices even after the warranty period expired.

As long as your seed is safe, your funds will be safe.

To my knowledge there haven't been instances of people getting hacked and having their funds stolen from their hardware wallets because the attacker would need physical access to the device to send the funds.