Hi ShenShen
The lock is suitable for internal and external use and comes complete with a rubber gasket for both sides. Do not apply any lubricants to the lock, the internal components are already treated and greased.
To keep the external finish clean and tidy we recommend a silicon based spray and a wipe with a clean soft cloth.
Hope that helps you.
Answered by: Codelock Tech
Date published: 2021-01-14