Best adhesive for reattaching foam pad to audio headset?

H3Knuckles

I have an old pair of Sennheiser PC 360s (like, the better part of a decade), and whatever glue was used to attach the pad that runs along the underside of the headband has become soft enough that the pad gradually works loose when resting on my desk.

I'd like glue it back on, but I don't know what kind of glue/epoxy/etc to use. I can't find information online as to what sort of plastic was used for the frame, but I know that (for instance) gorilla glue doesn't work with polyethylene or polypropylene. I'm not sure what the material used for the backing of the pad is either. There's also a little paranoia about how safe this stuff is since it'll be on my head. It's not like I lick my headphones, but I handle them and often touch my scalp, so I'm concerned about getting something toxic on my hands and then eating or say touching the straw of my drink.

I'm pretty much completely in the dark, so any help is greatly appreciated.

MichaelLC

Would that be this stuff?
https://www.loctiteproducts.com/en/products/specialty-products/specialty/loctite_vinyl_fabricplasticflexibleadhesive.html

H3Knuckles

I dunno, but thanks for the suggestion. I hadn't seen that product before.

this to that's recommendations generally seem to be Barge or 3M 80 (depending what material I guess for the headband cushion's backing), but both seemed to rate high on their toxicity warnings. I don't know if I'm overreacting, but that's part of why I'm asking here for suggestions.

BlindZenDriver

Is the whole area the pad covers perforated for sound or is there part of it that is just solid. If it is the later you could try and just use a bit of double sided adhesive tape, if there is enough are it should hold the foam just fine and likely it would less risky for some undesired chemical reactions that when using a glue.

H3Knuckles

Sorry I didn't reply earlier, had a minor power outage.

The 360's have got the 'two end pieces slide into a larger center piece' style of adjustable headband construction, and the whole upper surface is one solid piece. The area the pad directly attaches to however is two pieces with a small gap between, seen here (photo spoiled for size):


I might have to try the tape first, then adhesive if that doesn't work.

zepherin

I have used gorilla super glue to repair my JBL headphones back together. It doesn’t look great, but I went heavy on the adhesive.

It was plastic to plastic, however so that might not be what you are looking for. But the repair has held for 6 months.

H3Knuckles

Yeah, I'm not that concerned about appearance, so that'd be fine. In the picture I posted, you can see a little of the backing for the pad along the bottom of the frame (there's a sliver of extra material that they just folded back into the glued area), so it's not plastic on plastic, but I think if tape doesn't work I'll probably just go with Gorilla Super Glue.

Thanks for the feedback on what worked for you.