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High temp adhesive for plastic

bosleyjr

Diamond
Joined
Sep 30, 2006
Location
SE PA, Philly
Ok, not an industrial question, but...

My wife dropped the lid to our instant pot. The lid has a handle on top, and two ears on the side, all cast in a phenolic (matte finish though) plastic. One of the ears got cracked. not completely separated, but cracked and week. It's an area with a very short screw going into the ear from the inside of the pot.

My plan is to drlll out a through-hole for the screw, adding a flat-head countersunk nut to the outside and using a bolt and not a screw from the inside. In addition, I want to glue the plastic where it cracked.

My go-to adhesive solution is West Systems G/Flex 650. However, it lists a heat deflection temperature of 127°F. The description says that it can routinely handle temps up to 200°F.

Is that enough high temperature performance? Is there a better high temp resistant adhesive?
 

Dr. Rob

Hot Rolled
Joined
Nov 25, 2002
Location
Sweden
JB Weld is a very good answer, esoteric or not. The regular, standard, original version can happily withstand 400F. I know it does; I have tried it. Can't speak to the other new, improved (?) varieties of JB though.
 

52 Ford

Stainless
Joined
May 20, 2021
I just grabbed the instapot and took a look.

In conjunction with the adhesive, I wonder if you could get a longer screw. One that'd run all the way through it to help pull it back together. For what it's worth, I don't think the plastic lugs are under a lot of stress. Most of the pressure is put on the inner stainless steel lid.
5d5b54df0f76ea28c550e8d5a379fe70.jpg


Sent via smoke signals using Tapatalk
 

TDegenhart

Diamond
Joined
Mar 26, 2011
Location
Geneva Illinois USA

bosleyjr

Diamond
Joined
Sep 30, 2006
Location
SE PA, Philly
I just grabbed the instapot and took a look.

In conjunction with the adhesive, I wonder if you could get a longer screw. One that'd run all the way through it to help pull it back together. For what it's worth, I don't think the plastic lugs are under a lot of stress. Most of the pressure is put on the inner stainless steel lid.

Yeah, this is a good idea. The screw in your pic is only about 3/4 inch long. Thx!
 

true temper

Stainless
Joined
Jun 19, 2006
Location
Kansas
My wife’s plastic handle broke off her crock pot, same type of plastic as what you are dealing with.
It set on the bench for a month, trying to figure out the best way to fix it,
Figured it out threw the sob in the trash and told her to go buy a new one
 

DDoug

Diamond
Joined
Oct 18, 2005
Location
NW Pa
My wife’s plastic handle broke off her crock pot, same type of plastic as what you are dealing with.
It set on the bench for a month, trying to figure out the best way to fix it,
Figured it out threw the sob in the trash and told her to go buy a new one

Why would you purchase the same model ? The handle is still gonna fall off....
 








 
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