Do new keilim need to be kashered?

Do New Pots Need Kashering?

Stainless steel and aluminum pots and pans are often lubricated in the manufacturing process. Some contemporary poskim are concerned that the lubricating agent might be derived from animal fat, which would require kashering the utensil. Since the lubrication process involves heat, kashering via libun gamur (blowtorching) would arguably be necessary. However, there are many valid arguments for not making kashering compulsory in this case, including the fact that the lubricating oil is not considered food.

However, if someone specifically wishes to kasher new utensils, most poskim rule that a regular hagalah (boiling) is sufficient. This is achieved by completely filling the pot with water, boiling it up and pouring it out. An even simpler eitzah (solution) is to perform libun kal (a light form of purging by fire), which is equivalent to hagalah. The process of libun kal—according to the Shulchan Aruch Harav—is to put the empty pot on the fire for several minutes until it reaches yad soledes bo (hot to the point that the hand recoils). 

https://halacha2go.com?number=579

Practical Halacha: One minute a day. By Horav Yosef Yeshaya Braun, shlita, Mara D'asra and member of the Badatz of Crown Heights.