Intake Grate - Seal?

[PDGray]

I had to take the intake grate off the other today as I had to cut some rope that I sucked up off of the impeller. Question is: When I took the grate off there was a partial black seal with some type of mastic there - Is there a specific part that I can use to replace what is there? Or some sealent?

Do I need anything there at all?

 

[Kubotaboyz]

I just spoke to a dealer here in the area. They said that regular silicone sealant works fine. The black stuff from seadoo is extremely expensive (about $38.00 US). They said they use generic (clear) silicone.