Corso Fluids, a manufacturer of industrial fluids that has been in operation for decades,
had a gasket fail on one of their large mixing vessels. A search for replacement options
for this gasket prompted Corso Fluids to contact the Smooth-On Technical Helpline.
"Replacement parts for old manufacturing equipment is virtually non-existent and I had to
get this mixer back up and running," says Production Manager Tony Guzmanes, "I came across
Smooth-On on the internet and called the Technical Helpline Number listed. I was able to
speak to a Smooth-On technician who discussed options for making my own rubber gasket
using two products called URE-BOND® and VytaFlex® 40."
Chronicling The Process
Prior to applying URE-BOND & VytaFlex 40, the metal surface is sanded and completely
cleaned of any dust, oils, or other contaminants that may cause adhesion or curing
problems. After cleaning, the gasket channel is primed with URE-BOND adhesive directly
on to the metal surface and allowed to cure until tacky. At the tacky stage VytaFlex 40
is measured, mixed thoroughly & applied directly onto the URE-BOND surface and
allowed to cured.
Mr. Guzmanes continues: "We had our mixing vessel back in service in less than one week,
which saved us thousands of dollars in down time. That was 3 years ago and that gasket
is still functional – there's been no breakdown of the rubber."
1 - Prepare the metal surface by sanding and cleaning with solvent.
2 - Measure URE-BOND® II adhesive as specified by the product Technical Bulletin.
3 - Combine URE-BOND® II Parts A
4 - With a clean, dry, disposable chip brush, apply URE-BOND® onto the metal surface.
5 - Be sure not to let material 'pool.' Let cure for 60 minutes.
6 - VytaFlex® 40 Urethane Rubber is measured out as specified by the product Technical Bulletin.
7 - Combine VytaFlex® 40 Part's A & B together into one mixing container and mix together thoroughly.
8 - When VytaFlex® 40 is thoroughly mixed, the liquid is poured into the metal channel.
9 - VytaFlex® 40 will self-level as it is poured.
10 - The material will fully cured in 16 hours at room temperature (23° c. / 73° f.).
11 - The mixing vessel back in service well ahead of schedule saving thousands of dollars in down time.
12 - After 3 years the gasket shows no sign of wear.