No. If they do, then they will be labelled as having surge suppression.

Surge absorber is not accepted terminology. More information is needed.

You can do an internet search for the term and you will get an answer.

TVSS (Transient Voltage Surge Suppression) product have been renamed to SPD (Surge Suppression Devices).

LEA Dynatec correct name is LEA International.

Contact them for information on how to purchase at http://www.leainternational.com

A varistor is an electronic component used for surge suppression. It is also known as a voltage dependent resistor, but it acts more like two zener diodes reversed and placed in parallel. The majority of surge suppression devices use these. However, they don't work all that well for lightning strikes.

A capacitor is a capacitor, no matter what circuits you use it in. There is no difference between one used in AC and one in DC, except perhaps the size that is appropriate.