Mastic Sealant

FOB Reference Price:Get Latest Price
US $0.5-1 / Piece | 100 Piece/Pieces (Min. Order)
Supply Ability:
1000 Carton/Cartons per Day
Shanghai / Ningbo
Quick Details
Other Names:
epoxy putty
Place of Origin:
Zhejiang, China (Mainland)
Double Components Adhesives
Main Raw Material:
Construction, Packing, Transportation
Brand Name:
Model Number:
2 in 1
Packaging & Delivery
Packaging Details
tube 58g
Delivery Time
30 days

JOINTITE 550 Mastic Sealant 




JOINTITE 550 Epoxy Putty Stick is a newly developped 2 in 1 epoxy putty with an advanced, high strength formulation. It is easy to use and is suitable for many applications.


JOINTITE 550 Epoxy Putty Stick is fireproof and resistant to solvents and chemicals. It does not shrink or warp. Cured putty may be drilled, scanded and painted.


JOINTITE 550 Epoxy Putty Stick can withstand high temperature of up to +160°C(+320°F),and can be used under water.






Mixes like clay...hardens like steel!;


Easy to mix with no measuring and weighing;


Good “feel”...mixes easily, smooth into place with your wet fingertips;


Will not drop, slump, sag or flow when use;


Will not shrink when curing;


Good adhesion on many materials;


Bonds well into wet surfaces;


Can be painted, sanded, machined, tapped, or drilled;
Withstand high temperature of up to +160°C


Excellent Insulator.


Long Pot Life.


Can be used under water.






As Supplied – tested at 23°C±2°C, RH50%±5%:


Item                                         Data                    Standard


Aspect:                   Green(resin, outer) and White(hardener) Putty


Odor:                       Slight odor


Gravity, g/cm3               1.7~1.9


Open Time, min.             30~60                 GB/T 13477.5-2002


Totally Cured Time, H           24


Service Temp, °C               -40 ~+160


Application Temp, °C           +5~+50




As Supplied – tested at 23°C±2°C, RH50%±5% 7 days :


Color after Cured              Grey


Hardness Shore A:             ≥80           ASTM D-2240-050


Volatile Content, %             < 1


Volatile by volume, %           < 1


Specific Gravity:               1.7~1.9


Compressive Strength, MPa      ≥70     ASTM D-695


Tensile Strength, MPa             ≥22        ASTM D-638


Flexural Strength, MPa           ≥4         ASTM D790-03


Bond Strength Metal, MPa         ≥2.2        ASTM-D-1002


Electrical Insulation, KV/mm       ≥10       ASTM-D-149






JOINTITE 550 Epoxy Putty Stick is a two-part epoxy putty stick that bonds, seals, leaks and repairs, gouges in steel, aluminum, wood, fiberglass, pipes, porcelain, gasket, hot hubs, heads, headers, manifolds.


JOINTITE 550 Epoxy Putty Stick can fixes leaky gas tanks without draining. And use to fill cracks and holes or to patch dents and scratches.


JOINTITE 550 Epoxy Putty Stick is ideal for do-it yourself work and all kinds of repairs at home like doors, hinges, latches, patch concrete, repair tool handles, swimming pools




24 months in unopened packaging in a cool and dry storage place at temperatures between +5°C and 25°C.






Green (resin, outer) and White (hardener).


Also we can produce the sealant with special color upon customers' requirement.






Tube: 24g (Resin+Hardener)


Tube: 57g (Resin+Hardener)