After the 4" MONDI™ spool piece was cleaned, Flange Pelseal® was applied with a standard 10-oz. caulking gun.
It was then spread and worked into the threads with a spatula and scraper.
The Flange Pelseal® then squeezed out of both sides of the flange, as intended.
The Flange Pelseal® then squeezed out of both sides of the flange, as intended.
APT used a pneumatic grinder with an abrasive wheel to simulate severe "impact damage" 0.100 inches in depth.
As the soap solution shows, the gasket was unable to seal the "damage" and prevent a leak.
A large dot of Flange Pelseal® was applied to the damaged area, spread over the spool's face and allowed to cure for 2 hours and a new gasket was put in place.
A large dot of Flange Pelseal® was applied to the damaged area, spread over the spool's face and allowed to cure for 2 hours and a new gasket was put in place.
The spool piece was pressurized to 100 psi for 8 hours and the connection stayed "bubble tight".
The Flange Pelseal® filled the depth of the damage, which exceeded the deformation limits of the Step-Ring gasket, bonding well with both the MONDI™ and the gasket.
The next test was designed to simulate the damage caused by erosion and/or corrosion caused by a leak over an extended period of time.
The simulated damaged was created by dimpling the face of the spool using a drill.
The damaged area was filled with Flange Pelseal® and a light coating was spread over the sealing area.
To ensure the best possible results, the product was applied to both sides of the gasket and allowed to cure for 2 hours.
50 psi of air pressure was applied for 8 hours with no leaks. Good bonding was noted overall, including with the slick gasket surface.
