To seal or not to seal ?

[intrepidvoyager]

reinstalling an SX drive and note the seloc says no sealant on the transom seal .... also note Dons post ...

Many of the older drives like that also used a rubber oring type seal that gets glued into a groove in the transom sheild. When you took it apart, it would appear flat and like hard rubber. That is because it's old and used up, scrape it out and put a new round one in. It gets glued into the transom shield with rubber cement (I use bellows adhesive since it's usually handy. This kind takes no sealant on the ring or transom of the boat, when you use a new seal ring.

have not got the new seal yet but understand it comes as a long strip and has to be cut to fit so thought at the joint at least good idea to use perfect seal or ???

its an older epoxy ply core transom in perfect shape ...no water entrainment at bolt holes etc but slight orange peel on glass finish .....never had a leak before ..

thought i'd use perfect seal to hold the gasket in place in the grove on the transom shield and then smear a light coat of perfect seal on the outside of the seal where it contacts the transom and particularly at the joint in the seal itself

I've used perfect seal everywhere for years ....great prduct ...kind of looks like butterscoth topping .....wonder what it's like on vanilla ice cream

 

[Fishermark]

Re: To seal or not to seal ?

When I installed the transom assembly on my Alpha 1, I glued the o ring to the transom assembly, and then used a light coat of silicone gel, (like Vaseline - designed to lubricate and seal pool pump o rings), to coat the o ring where it contacts the boat transom. Worked well for me.

(NOT TO BE CONFUSED WITH RTV SEALER).

 

[Don S]

Re: To seal or not to seal ?

Perfect seal is the most imperfect sealer you could possible think of for that job.
The seal gets glued into the groove. Mercs bellows adhesive works wonders. The seam goes at the top of the drive.
If you must use a sealer, a thin line of 5200 will work. Sillycone should NEVER be used below the waterline..... NEVER.

reinstalling an SX drive and note the seloc says no sealant on the transom seal

Why are you using a Seloc POS when the OEM manuals are right here for the download ?????????

Adults Only sticky ...... Read.

 

[Fishermark]

Re: To seal or not to seal ?

Sillycone should NEVER be used below the waterline..... NEVER.

Don, I'm not talking about the kind of "sillycone" that people like to use as a gasket sealer. I'm talking about the kind used to lube o rings. Like this:

It is what I use on all my o-rings, etc. It doesn't degrade the rubber. Here is how it is described: "A Teflon based, multipurpose pool lubricant used on o-rings and gaskets."

The o ring is designed to seal dry. I will give you that. This simply ensures a good seal.

 

[Don S]

Re: To seal or not to seal ?

It's not an oring, it's a 3/4" diameter foam rope. When the transom shield is tightened down it flattens and conforms to any imperfections of the transom. It doesn't have to be lubed or anything, doesn't need sealant. The manufactures never use sealant, or a lube. IT's not sliding, slipping or anything else. It's compressing.

 

[intrepidvoyager]

Re: To seal or not to seal ?

don't get the bit about "imperfect sealant" ....I assume the bit about sillycone does not refer to Perfect Seal as its not got any silicone in it ....



.......but think you are right Don ......better to use say 3M rubber cement sealant in the grove...also better i think for the joint at the top ..it will tack better than perfect seal... got it ...no sealant on the outside ...thanks.

also while we are on sealants ...what's the diff between perfect seal and bellows cement ...... like others I have used perfect seal on various bellows for years .....works great , never a leak .... a buddy has some merc bellows cement ...looks / tacks exactly the same just diff label and size ????

 

[Don S]

Re: To seal or not to seal ?

Perfect seal is nothing more than a non hardening, liquid gasket sealer. You put it on paper gaskets, in some applications. Bellows adhesive is a glue. Much like contact cement.

Perfect Seal is a BRAND Name, it doesn't mean it a perfect sealer for everything.

 

[intrepidvoyager]

Re: To seal or not to seal ?

are you saying not to use Quicksilver Perfect Seal on the bellows ?

re non hardening ...I have pulled stuff apart that has been Perfect Sealed (PS) under pressure like a hose clamped hose and you need to apply lots of twisting force to break the seal between the hose and the tube/pipe after releasing the hose clamp ....... also drips of PS on the threads of the can it comes in will cause the lid to seal shut and you need chanel locks to get it open ......

JUST CURIOUS

 

[intrepidvoyager]

Re: To seal or not to seal ?

OOPS SORRY FORGOT to ans your comment about not using the VP download manual ...... no printer here and my wife won't let me take the lap top near the water cause last time SHE dropped it in the salt chuck ...

ok ...here is another ( SORRY) sealant question re the flat rubber gasket that goes under the upper gear case cap on the SX .....the cap that the dip stick screws into ...... anyway there is slight corrosion discoloration on the gasket mating surface in one corner .... nothing serious ... no visible pitting ....

ANYWAY ....I would have thought that Perfect Seal would be ideal to seal both the gasket and the entire cap mating surfaces to stop any water even reaching the gasket area ...?????

thanks