No cost, no registration, no passwords -- just aloha, fun & authoritative answers
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Removing FEP Teflon from Stainless 316

2005

I need to remove FEP Teflon from a large stainless 316 mixing tank in a pharmaceutical-type chemical process. Then I need to have the tank polished to a 4Ra (super-mirror). I hope to do this without having to remove the tank. Is this possible? How should I get the FEP completely off? I've heard bad things about gases emitted when removing teflon via torches, etc. Any suggestion on method?

Thanks,
BtodaG

Brian Garrett
Pharmaceutical - Greenwood, South Carolina

Do you know the thickness of the coating?
If it is under 6 mils, you can gritblast with organic or plastic media (urea) It takes time but it does not affect the substract.
Take care if you want to burn it out, The FEP contains fluoride and it becomes Fluorine acid!

Yours
Jordi Pujol
Teflon coater in Spain

Jordi Pujol
- Barcelona, SPAIN
2005

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: