What kind of caulking around running lights?

[comfun1]

I was looking at the running lights on my fifth wheel and noticed they all came with some kind of rubber like caulking around them. Some of them need resealing. Wondering if anyone knows what kind of caulk it is? Thanks

[JRTJH]

Probably DICOR "NON-self leveling" or SikaFlex polyurathane.

[Logan X]

If it’s clear, it might be pro flex by Geocel.

[Tbos]

On my rigs it has looked and acted like clear silicone. I know that’s not what it’s supposed to be but it sure looks and feels like it.

[mcmeadows1]

Originally Posted by Logan X

If it’s clear, it might be pro flex by Geocel.

^^x2

I used Geocel ProFlex RV (clear) to seal new brake light housings to my RV last year. It is easy to apply (with proper preparations to the surfaces it will be put on), provides a watertight seal, is durable and flexible, and should last a long time.

Marty