Duo-Pak Delivery
System Updates
Q1 2018
Better dispensing, better results.
As of Q1 2018, the 3M
™
Scotch-Weld
™
Structural Adhesive
Duo-Pak delivery systems will feature updates and
improvements to help provide better adhesive delivery
and results.
Improvements to the updated delivery
systems in the 3M Duo-Paks include:
•
New seal to eliminate cartridge leaks
•
New isolated outlet to prevent cross-contamination
•
Updated cap to prevent accidental bonding
of cap to cartridge
•
Cartridge volume changes
•
Manual plunger and nozzle changes
•
Pneumatic applicator changes
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New seal to eliminate cartridge leaks
The new pistons use a double lip seal instead of an O-ring seal
design to help eliminate leaks due to chemical incompatibilities
that cause O-rings to swell and degrade over time.
CURRENT
PISTON SEAL DESIGN
NEW
PISTON SEAL DESIGN
BETTER CHEMICAL
COMPATIBILITY
New cartridge end sealing flange
A sealing flange at the rear of the cartridge chambers
“locks”
the above pistons in position so these products can be
qualified for air shipments without leaks around pistons.
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New isolated outlet to prevent
cross-contamination
The current cap can be installed backwards on a partially
dispensed cartridge, permanently sealing the cartridge shut.
This renders the remaining adhesive useless.
The new cap is keyed and cannot be installed backwards, so
partially consumed cartridges can be saved and used later.
LESS CROSS-CONTAMINATION
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Cartridge volume changes
The contained volume of the 3M Duo-Pack cartridges has changed.
OLD DELIVERY SYSTEM
NEW DELIVERY SYSTEM
1:1 System
2:1 System
2:3 System
47.0 or 50.0 mL
37.0 mL
43 mL
48.5 mL
50.0 mL
No change
–
see below*
In addition, the new 1:1 System has one cartridge style, instead of
three per the old packaging.
2:1 RATIO STRUCTURAL ADHESIVE
37 to 50 mL
CURRENT
DELIVERY SYSTEM (37 mL)
NEW
DELIVERY SYSTEM (50 mL)
1:1 RATIO STRUCTURAL ADHESIVE
50 to 48.5 mL
CURRENT
DELIVERY SYSTEM (3 cartridge styles)
NEW
DELIVERY SYSTEM (1 cartridge style)
*3M EC-2216 is the only Duo-Pak adhesive delivery system that will not change. This product will continue to use the old 2:1 plunger and
the helical and square static mixers. However, a pneumatic applicator for this product will no longer be available from 3M.
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