How to glue Pharmed tubing

[bmp8501]

I am trying to find a glue that would work well with Pharmed tubing.
Specifically to glue Pharmed tubing to a Silicon stopper.

I have tried Loctite and silicone glue. They do the job, but only to an extent. Pharmed is extremely chemical resistive, and seems to not bond with the glue.

 

[MintJulep]

Ultrasonic welding?

 

[patprimmer]

What exaqctly is pharmed tubing made of. Pharmed sounds like a performance based critera rather than aaterial type.

Silicons are thermoset I believe, so cannot be welded. Maybe the tubing can be riverted over with ultrasonics, depending on that the actual material is.

I take it both are elastomers which complicates adhesion as the glue has to move with the materials it is joining.

Regards
Pat
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[MintJulep]

http://www.biopharm.saint-gobain.com/en/Products.asp?ID=54

It can be welded, as there are commercially available things made from PharMed with welded fittings, and GE makes a gadget for welding it.

http://www.gelifesciences.com/aptri...r_home~wave_fluid_transfer~sterile_tube_fuser

Could the silicone bits be changed to something that is weldable?

 

[MintJulep]

ergo 5861 cyanoacrylate will bond to PharMed apparently. Not sure if it will bond to silicone.

 

[bmp8501]

@ patprimmer - That is my main issue as well; I don't know what PharMed tubing is made of exactly.

@ MintJulep - The silicone bits are being molded, and we have purchased the molding tool and everything. So changing that might be a long shot.

I will look into Ergo 5861.