3M 4200 - 3M 5200

[Leo MacDonald CD30K]

Hi Folks,
Installing the Head pumpout generated a few more questions;
What is the correct usage for 4200 vice 5200?
What is the shelf life after opening and partial usage?
My immediate concerns are for bonding a backing plate to the hull and sealing thru-hulls and seacock.
Thanks,
Leo MacDonald CD30K Heather Ann
(on the hard in Groton, CT - now with three holes in the hull)



macdola@gwsmtp.nu.com

[Robert M Paterson]

Hi Folks,
Installing the Head pumpout generated a few more questions;
What is the correct usage for 4200 vice 5200?
What is the shelf life after opening and partial usage?
My immediate concerns are for bonding a backing plate to the hull and sealing thru-hulls and seacock.
Thanks,
Leo MacDonald CD30K Heather Ann
(on the hard in Groton, CT - now with three holes in the hull)

Leo;Both adhesives are formulated for below and above the water line.
5200 is a slow cureing formulation up to 7 days. 4200 is fast cureing up to 24 hrs. The use of 5200 is for bonding material that you (think) you will never have to take apart,formulated for high strength unremovable bonds. The 4200 is formulated to allow disassembly of parts. Both are applicable in your case. I find the shelf life of both formulations if sealed after use ( a wood screw turned into the tip ) and hung upside down seems to keep the shelf life well over a year.Can't vouch for more than that ,by then I always seem to use it up on one project or another.
Hope I was of some help, best of luck. BoB P



wskyr3d@aol.com

[jim stull]

Hi Folks,
Installing the Head pumpout generated a few more questions;
What is the correct usage for 4200 vice 5200?
What is the shelf life after opening and partial usage?
My immediate concerns are for bonding a backing plate to the hull and sealing thru-hulls and seacock.
Thanks,
Leo MacDonald CD30K Heather Ann
(on the hard in Groton, CT - now with three holes in the hull)

Hi Leo
Just my opinion, for what it's worth, the 5200 is great for "bedding" the thru hull but for bonding the backing plate to the hull, I like epoxy.
Jim

Leo;Both adhesives are formulated for below and above the water line.
5200 is a slow cureing formulation up to 7 days. 4200 is fast cureing up to 24 hrs. The use of 5200 is for bonding material that you (think) you will never have to take apart,formulated for high strength unremovable bonds. The 4200 is formulated to allow disassembly of parts. Both are applicable in your case. I find the shelf life of both formulations if sealed after use ( a wood screw turned into the tip ) and hung upside down seems to keep the shelf life well over a year.Can't vouch for more than that ,by then I always seem to use it up on one project or another.
Hope I was of some help, best of luck. BoB P

jtstull@icubed.com