Question 1

I want to bond glass to polypropylene. Does this work? If not any good epoxy that works for this?

Accepted Answer

I did not know if the plastic bonder would stick to glass, so I tried it on some empty glass jars and old prescription pill bottles which were made of Polypropylene, (type 5 plastic). I cleaned and sanded both the plastic bottles and the glass jars. I applied the JB Weld Plastic Bonder to one sample and also tried PC-11 Marine Power Epoxy Paste on another, (the jars and bottles were put together bottom to bottom). After they had cured I tried to pull them apart. Both the Plastic Bonder and the Epoxy Paste held with light pulls and twists. Both came apart with a medium/heavy pull. Both the Plastic Bonder and the Epoxy Paste stuck tenaciously to the glass jar, and came off cleanly from the plastic bottle. So it does stick to glass rather well, while holding, but not bonding to the Polypropylene bottle. I would try some on your particular application, (a sample), and see if the medium holding power to the Polypropylene will work for you. The Plastic Bonder was much easier to mix and apply than the Epoxy Paste. The Plastic Bonder cured in about two hours while it took 24 hours for the Epoxy Paste to cure. Both had about the same results as far as the holding power, but the Plastic Bonder when mixed is like a gel, while the Epoxy is a much thicker paste, which means you could use it to fill gaps and holes. It was easy to file/sand the Plastic Bonder after it had cured, the Epoxy Paste could be worked after it had cured, but it was much harder to do so.

Question 2

Will this work on hdpe?

Accepted Answer

I used this on a PVC job and it worked well for that, but I mixed it on a plastic lid that was HDPE (#2 recyclable) before applying it.  There was some left on the lid, and after it dried, it pealed right off the lid, so I'm not too sure about using this on HDPE.

Question 3

Can this be used to fix a small crack in a dashboard?

Accepted Answer

Yes! I used it to repair the vacuum

Question 4

Use on metal?

Accepted Answer

They have one for metal but this is for plastic.

ASIN	B009EU5ZNO
Best Sellers Rank	#1,473 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #28 in Cyanoacrylate Adhesives
Brand Name	J-B Weld
Color	Tan
Compatible Material	Carbon, Ceramic, Concrete, Plastic
Container Type	Syringe
Customer Reviews	4.6 4.6 out of 5 stars (4,874)
Full Cure Time	30 minutes
Global Trade Identification Number	00043425501332
Included Components	Unit^Instruction Guide
Item Form	Syringe
Item Package Quantity	1
Item Type Name	Plastic Bonder Syringe
Item Weight	1.6 ounces
Manufacturer	J-B Weld
Material Type	epoxy
Model	50133
Number of Pieces	1
Other Special Features of the Product	Fast Drying, Impact Resistant, Strong
Part Number	50133
Specific Uses For Product	Auto Repairs, Craft, Household Repairs
Tensile Strength	3770 psi
UPC	043425501332
Viscosity Level	High
Volume	25 ml
Warranty Description	No Warranty
Water Resistance Level	Not Water Resistant

J-B Weld 50133 Plastic Bonder Structural Adhesive Syringe - Tan - 25 ml

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