Will it seal a PVC pipe that has a 1 inch slit? Must hold 75lbs of water press. Would put a rubber patch & 2 pipe clamps over it.

"cut out the pipe and replace the pvc." By doing that, you are creating at least two new joints that may leak.

Is this product good for the broken plastic frame of eyeglasses? The eyeglasses is broken on the temple leg.

As an optician for over 30 years, sadly, nothing I've found short of a 2 part epoxy/resin will work...but only .temporarily. plus you'll probably get it everywhere including the lenses. I suggest visiting your local optician. I have tons of discontinued frames and can usually hand-edge the lenses if its a close fit . BTW, its the same with so-called scratch removers for eyeglass lenses:snake oil. hope this helps... John shameless plug follows: glassescontacts.com or FB.

Can it be used more than once, or is thrown away after one use?

Yes, it can be used more than once. I bought a tube from Amazon on January 2018 and used about half of it then. In February 2021, I used part of the remainder to fill in some drill holes in some wood furniture that I was repairing. So for me, I got a 3-year shelf life out of it. The trick to keeping it fresh is to keep the outer foil on the remaining amount (only cut off what you need to use), wrap the whole thing in plastic wrap, and then put it back in the plastic tube and secure the cap.

Will it fill in gaps? Have some plastic planters that have a few cracks at the top edge, The cracks are about 3" and a few small gaps

Yes, if you mold it to the shape of the existing surface correctly.

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Description

💥 Fix it once, fix it right — PlasticWeld powers your DIY wins!

FAST ACTING REPAIR POWER - Sets in just 25 minutes so you can get back to your day without delay.
HEAT RESISTANT DURABILITY - Withstands continuous heat up to 250°F, perfect for automotive and plumbing fixes.
WATER SAFE NSF CERTIFIED - Safe for potable water contact, ideal for plumbing and marine repairs without compromise.
MOLD SAND SHAPE WITH EASE - Cures to a sandable, drillable, and paintable finish for seamless, professional results.
VERSATILE PLASTIC COMPATIBILITY - Bonds and rebuilds ABS, PVC, CPVC, fiberglass, and more—your all-in-one plastic solution.

J-B Weld PlasticWeld is a hand-mixable two-part epoxy putty designed for fast, durable repairs on a wide range of plastics including ABS, PVC, and automotive bumpers. It sets in 25 minutes and fully cures in 3 hours, delivering a strong 600 PSI bond that resists heat up to 250°F. Moldable, sandable, and NSF certified for potable water safety, it’s the ultimate go-to for professional-grade plastic repairs that last.

Specifications

Brand	J-B Weld
Specific Uses For Product	Automotive repair, Marine repair, Plumbing, DIY projects
Material	Epoxy Putty
Item Form	Putty
Special Feature	Heat Resistant
Color	Off-White
Item Package Quantity	1
Package Information	Cartridge
Item Volume	59.14 Milliliters
Viscosity	High
Full Cure Time	3 Hours
Water Resistance Level	Waterproof
Tensile Strength	600 PSI
Unit Count	2.0 Ounce
UPC	043425082374 043425008374 043425700063 798304344912
Global Trade Identification Number	00043425008374, 00043425082374
Manufacturer	JBWeld
Model	JBWeld 8237
Item Weight	2.4 ounces
Product Dimensions	7.5 x 3.8 x 1.19 inches
Item model number	8237
Is Discontinued By Manufacturer	No
Exterior	Painted
Manufacturer Part Number	8237
Special Features	Heat Resistant

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