3m 4200

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jeffrobean

Cadet
Joined
Feb 28, 2010
Messages
14
Is there anything you can buy at walmart or lowes that is pretty close in quality as the 3m 4200? I am sealing the engine mount bolts to transom.
 
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fishrdan

Admiral
Joined
Jan 25, 2008
Messages
6,989
Re: 3m 4200

My local Lowes has 3M 5200, but not 4200. WalMart has "marine" sealer in the boat section, but not sure if it's like 5200 or 4200...
 
Spinnaker

Spinnaker

Petty Officer 1st Class
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Jul 5, 2009
Messages
210
Re: 3m 4200

I couldn't tell you what walmart has but 5200 or 4200 is fine. 5200 just cures faster.
 
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osborn159

Petty Officer 1st Class
Joined
Feb 27, 2010
Messages
383
Re: 3m 4200

hey jeffro, holes in my transom im using the best i can afford, id bite it on this one and get a tube of 4200/5200 whichever and seal them with that, its not that pricey, or try the stuff from wallys and check it out, if you do let us know how it works, it is your boat, your money, your choice.
 
trendsetter240

trendsetter240

Lieutenant
Joined
Jun 22, 2009
Messages
1,458
Re: 3m 4200

No, none of them will be as good as the 3m products. You don't want to risk water leaking into the wood of your transom or into your boat/bilge.

Use the 4200 fast cure, all you need is a small tube should be less than 10 bucks. This is an important seal and you should use the good stuff.
 
bskye85

bskye85

Seaman
Joined
Jun 19, 2009
Messages
56
Re: 3m 4200

Wallyworld's brand of "Marine" sealant is SILICONE..Good for your tub/shower.

Your transom will thank you for years to come with 3M..I'm partial to the 5200 (Unless you plan on taking the bolts out again:D) Even replaced my tub's old caulking with it;)

Don't be afraid of price. Spend $10 at walmart for silicone, or pick up a tube of 4200/5200 on ebay for $14 all day long
 
S

saildan

Petty Officer 1st Class
Joined
Mar 7, 2009
Messages
264
Re: 3m 4200

jeffrobean said:
Is there anything you can buy at walmart or lowes that is pretty close in quality as the 3m 4200? I am sealing the engine mount bolts to transom.
Click to expand...
Sure, the caulk companies give you the information so you can make an intelligent selection to match your need.

Here's a thread I just saw on the subject of fitting the correct material to the job at hand -

I think the application dictates the product you select. I see many DIYers
gluing down stuff [3M5200] that will need periodic removal for repair or replacement. Not recommended.

For thin-film sealing like you'd want to set something such as a bow handle
or deck cleat to keep moisture from seeping into the fastener holes you
might choose a marine silicone sealer.

To fill hairline gaps as you might get with a slightly uneven surface behind
a rudder gudgeon, a low shrink caulk like a non-adhesive polyurethane could
be a good choice.

For setting a piece of hardware that would not be removed except during a
major repair -and- where you want to reinforce the hold of the fasteners ...
or ... where you want to set something without fasteners, an adhesive caulk
(if flexibility is also needed) or purely an adhesive could be the correct
material.

Caulks are primarily for sealing where some flexibility is desired. Some
caulks also provide an adhesion element. What you select should be matched
to the job. Here are a couple of data sheets commonly found on
manufacturer's web sites. They allow you to compare qualities such as
Tensile Strength, Hardness, Lap Sheer, and Flex so you can make an informed
decision.


TremPro 636 (high performance, medium modulus, moisture-curing polyurethane
sealant)
http://tinyurl.com/TP636DATA
Tensile (pull-apart) Strength 250-300 psi [<-- this is similar to 3M4200]

[Boat Life is another brand less expensive than 3M products.]

3M 5200 Data Sheet (polyurethane caulk w/added adhesive properties)
http://tinyurl.com/3M5200DATA
Tensile Strength 1,000 psi
The tensile strength comes from the caulk formula, not the fact that it's
also a mid-range adhesive.


For comparison - where an adhesive is really what's needed

WEST System Epoxy (adhesive)
http://tinyurl.com/WEST-DATA
Tensile Strength 408,000 psi
Click to expand...



.
 
Bob_VT

Bob_VT

Moderator & Unofficial iBoats Historian
Staff member
Joined
May 19, 2001
Messages
26,064
Re: 3m 4200

Do not use 5200 vs 4200.........

Remember 5200 is permanent and 4200 will allow you to remove the bolts and take things apart.

They are very different in properties and what they do.
 
Spinnaker

Spinnaker

Petty Officer 1st Class
Joined
Jul 5, 2009
Messages
210
Re: 3m 4200

Bob_VT said:
Do not use 5200 vs 4200.........

Remember 5200 is permanent and 4200 will allow you to remove the bolts and take things apart.

They are very different in properties and what they do.
Click to expand...
Not to counter-dict you Bob but rather state the facts. Don't be offended but
on the contrary, 5200 is fast cure. The properties are otherwise the same. Permanent? Well, it can be a real hassle to separate but on bolts a little heat allows for easier removal.

http://www.3m.com/product/information/Marine-Fast-Cure-5200-Adhesive-Sealant.html
 
trendsetter240

trendsetter240

Lieutenant
Joined
Jun 22, 2009
Messages
1,458
Re: 3m 4200

Spinnaker said:
Not to counter-dict you Bob but rather state the facts. Don't be offended but
on the contrary, 5200 is fast cure. The properties are otherwise the same. Permanent? Well, on bolts they are the same. Heat allows for easier removal.

http://www.3m.com/product/information/Marine-Fast-Cure-5200-Adhesive-Sealant.html
Click to expand...


Actually you are a bit misguided spinaker. Both 5200 and 4200 are available in regular or fast cure. I have used both cure types with both 5200 and 4200.

The properties are quite different, I will post the link to the data sheets if I find it. 5200 is significantly stronger and cures to an extremely strong bond that is stronger than fiberglass.

You use the 5200 for permanent bonds and 4200 for very strong bonds that you can remove at a later date. Such as motor mounting bolts.
 
Spinnaker

Spinnaker

Petty Officer 1st Class
Joined
Jul 5, 2009
Messages
210
Re: 3m 4200

trendsetter240 said:
Actually you are a bit misguided spinaker. Both 5200 and 4200 are available in regular or fast cure. I have used both cure types with both 5200 and 4200.

The properties are quite different, I will post the link to the data sheets if I find it. 5200 is significantly stronger and cures to an extremely strong bond that is stronger than fiberglass.

You use the 5200 for permanent bonds and 4200 for very strong bonds that you can remove at a later date. Such as motor mounting bolts.
Click to expand...

Really?
Ok then. I've used tons of 5200 but never the 4200. The 5200 is extremely strong. I've also used Sika Flex 291, 292 and 295. I actually like the Sika more than 3m's product. I was going by what the website stated.

Again, sorry Bob.
 
Bob_VT

Bob_VT

Moderator & Unofficial iBoats Historian
Staff member
Joined
May 19, 2001
Messages
26,064
Re: 3m 4200

3m 4200 is advertised at half the strength of the 3m 5200.......

3m's website is confusing but the detail sheets are in there.
 
O

osborn159

Petty Officer 1st Class
Joined
Feb 27, 2010
Messages
383
Re: 3m 4200

jeffro, i think youll be glad you did, your transom thanks you.
D
 
M

mswalter2009

Seaman Apprentice
Joined
Jul 6, 2009
Messages
45
Re: 3m 4200

I you clean and prep two fiberglass surfaces the proper way. ie rough sanding, clean with acetone, sand again and clean with acetone then 5200 them. You will need a oscillating power saw to seperate. I'm going through this right now. Why I ever used 5200 is beyond me... Oh well
 
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