Is this safe?

[Notsolostfish]

Is this safe to use on a flow meter by hydros to add to my uv sterilize? I want to use it on the union threads wasnt sure if there was specific ones for the hobby thats safe or if this is safe

 

[Dom]

" AI Overview

Yes, the most common Blue Monster pipe thread sealant is aquarium safe because it is NSF Certified for potable water, non-toxic, and has NSF 14 and 61 approvals. It is a heavy-duty, industrial-grade, non-hardening sealant that adheres to oily threads and is safe for use on all materials, including plastic pipe systems like those used in aquariums."

 

[UncommonSense]

You want a PTFE pipe thread sealant which specifically lists plastic in it’s intended applications!

These thread sealants never actually dry/cure unless they’re in an anaerobic environment! — you want to try to only get it on the threads, and not have any large gobs of sealant which will be pushed inside the plumbing during assembly!

 

[Notsolostfish]

You want a PTFE pipe thread sealant which specifically lists plastic in it’s intended applications!

These thread sealants never actually dry/cure unless they’re in an anaerobic environment! — you want to try to only get it on the threads, and not have any large gobs of sealant which will be pushed inside the plumbing during assembly!

The one i linked mention plastic. So i am not sure

 

[UncommonSense]

The one i linked mention plastic. So i am not sure

Should be fine then! — it’s just always worth checking, as some thread sealants are specifically intended for metal threads; usually in hydraulic applications!