plumbers grease for O rings?

[Devaji]

Hey R2R I been having problems with a leaking UV at the unions BRS recommend some some lube.
i went to Ace and the guy gave me plumbers grease.

did not think to much about it got home and put it on the O ring then my thought was man this smells like straight up grease wonder if its reef safe?

 

[Devaji]

Here is what I got



thoughts?

 

[RobB'z Reef]

Not sure where to get it but they do make food grade grease for fittings and other lubricating uses. Any grease is not a sealant however and may or may not address your issue.

 

[ca1ore]

Molykote 111

 

[theMeat]

Silicone grease works. Cooking oil works. A lil spit can work to get it seated well. A lil on threads can help too. Don’t make too tight

 

[AquaJeweler]

Hey R2R I been having problems with a leaking UV at the unions BRS recommend some some lube.
i went to Ace and the guy gave me plumbers grease.

did not think to much about it got home and put it on the O ring then my thought was man this smells like straight up grease wonder if its reef safe?

Need to use food grade grease!!!!!!

 

[redfishbluefish]

Years ago plumber's grease meant that it was rubber-safe....typically silicone based. I've noticed a couple years ago that some now were petroleum based. Petroleum based greases are NOT rubber safe. They will eventually cause the rubber to swell. So what your looking for is NON petroleum based grease. I now use Leslie's Pool Lube, and have been using this for over 30 years....when I had freshwater tanks. My rubber parts would last forever.

 

[AquaJeweler]

Need to use food grade grease!!!!!!

Ps I use food grade on every onion and my skimmer seal working great for 2 years

 

[Devaji]

well once I smelled it I knew it was a no go. the UV is dry so I will take out the union and clean the O ring.

guess i,ll try to find silicone food grade lube for it.

thanks guys

 

[KrisReef]

Another option,

Lifegard Aquatics R172036 Silicone Lubricant​