does epoxy stick to rubber???

[djt]

i need to know if epoxy sticks to rubber because i am making a piston. the piston is solid epoxy and im putting rubber on it for a seal. should i use epoxy inbetween the epoxy cylinder and the rubber? or what should i use?

[Atlantis]

Put a bolt through the piston and use a washer to hold the rubber on.

[jrrdw]

Epoxy sticks to darn near anything. You molded a piston completely out of epoxy? How big is the piston?

[drac]

Have we forgotten that rubber is adhesive resistant? i think it is anyway, one of my O-ring and epoxy projects didn't stick no matter how much epoxy i put on.

[djt]

yeah my dad epoxied his boat and he mixed it in a plastic container. all that was left in the container he didnt use just popped right out of the plasic. so it doesnt stick to everything. but i just used the bolt and washer. and the piston is 1 1/4 inch sanded down to fit 1 1/4 inch pipe. its a mini coaxil piston.

[schmanman]

maby if you rough the back of the rubber up with sand paper,it will hold

[boilingleadbath]

I'v had pretty good luck gluing neoprene to PVC using "platic welder" epoxy.
I'v been using it in my hop up device, and it's held up to what must be some pretty unhappy forces for a dozen plus shots now... (I don't get to shoot golfballs much)

Yeah, epoxy doesn't stick to everything.
I would have assumed you'd already know that, as it says so right on the packaging... (doesn't stick to polypropelene or HDPE)

[sgort87]

Okay guys, there isn't just "an epoxy" out there. There are different kinds of epoxy. And guess what. I'm not about to go out of my way to tell you what brand and type bonds what materials together. You know what you need to do? You need to *gasp* read the fucking package! Just look for rubber and plastic on the same package.

[jrrdw]

I know the epoxy i got from Great Planes sticks to anything i've gotten it on, (sometimes i'm kinda messy). It's intended for fiberglass cloth covering, (my rc plane). sgort makes a good point, theres many kinds.