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What is the rubber cap on a shaving cream can made out of?

What is the rubber cap on a shaving cream can made out of?

What is the rubber cap on a shaving cream can made out of?

(OP)
Hi y'all,


I am trying to figure out what material this red cap from my Gillette shaving cream can is made of. The reason is I am working on a personal project where I am trying to bond or glue something onto this piece, but nothing seems to stick or bond at all. At first I tried 2 part epoxy and super glue to no avail. Then I concluded that the piece was made of silicone so I got a single silicone bonding agent on amazon (https://www.amazon.com/gp/product/B00NGZHGFI/ref=ppx_yo_dt_b_asin_title_o04_s01?ie=UTF8&psc=1).

This worked well on the silicone piece that I am glue TO the red part, but slid right off the red part.

Please let me know if you have any answers or kinds of adhesives that I can use to bond silicone tube TO the red cap. Thanks very much for your help!



RE: What is the rubber cap on a shaving cream can made out of?

It could be a urethane.

RE: What is the rubber cap on a shaving cream can made out of?

Is it really rubber? I thought that part was plastic.

RE: What is the rubber cap on a shaving cream can made out of?

You do any surface prep? Many molded parts surface contain mold release. Bad for bonding :)

Regards

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand

RE: What is the rubber cap on a shaving cream can made out of?

PVC?

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: What is the rubber cap on a shaving cream can made out of?

Almost certainly to be one of

Polypropylene
Polyethylene
Acrylonitrile Butadiene Styrene (ABS)

RE: What is the rubber cap on a shaving cream can made out of?

(OP)
Thanks for all of the responses.

No I did not do any surface prep. If you can't tell by the 'computer' next to my name, I don't have a lot of knowledge in this area.

Assuming that it is made of one of the plastics mentioned, what should I use to surface prep it?

I will surface prep and try again. Thanks.

RE: What is the rubber cap on a shaving cream can made out of?

We won't hold that against you... can you check with Masterbond.com and see if they can recommend an adhesive. They have many types and some for very specific materials. pipe

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

RE: What is the rubber cap on a shaving cream can made out of?

A fine file or some medium sandpaper will break the surface enough to allow bonding

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed

RE: What is the rubber cap on a shaving cream can made out of?

If possible, it's best the adhesive uses a chemical bond rather than a mechanical one.

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

RE: What is the rubber cap on a shaving cream can made out of?

Dik, all bonds are electrical. No such thing as mechanical or chemical bonds.

RE: What is the rubber cap on a shaving cream can made out of?

Sure... if you say so... ponder

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

RE: What is the rubber cap on a shaving cream can made out of?

When perfoming TMooses' second test, it might be advisable to keep the flame well away from the pressurized can :)

The problem with sloppy work is that the supply FAR EXCEEDS the demand

RE: What is the rubber cap on a shaving cream can made out of?

The cap should be removable.

RE: What is the rubber cap on a shaving cream can made out of?

Dik, adhesion occurs when two materials exchange electrical charge, typically electrons. Adhesion is an electrical process.

RE: What is the rubber cap on a shaving cream can made out of?

That's funny... I'd always heard that if it can't bond chemically, then the surface must be roughened so it could bond mechanically... dunno that's what I've heard... but, I'll look into it.

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

RE: What is the rubber cap on a shaving cream can made out of?

Roughening the surface exposes the less oxidized, more electrically active material below.

RE: What is the rubber cap on a shaving cream can made out of?

(OP)
Thanks for all the responses. I was able to roughen up the surface and break thru and now regular old super glue is working as I'd hoped. 2thumbsup

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