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8790

Product Features 

The 8790 impregnation sealant has excellent one-time sealing efficiency. After special hydrophilic blending, it has superior washability and is rapidly soluble in water, suitable for the impregnation production line with traditional bubbling overturning mechanism. The cured material has excellent mechanical properties, and heat aging resistance. After impregnation, the workpiece does not leak under normal use.










Basic Performance Parameters

Typical Value

Range

Chemical type

Methacrylates


Appearance

Transparent, yellowish liquid


Density(20℃)(g/cm3)

1.044

0.900~1.050

Thermal stability at 75℃

90

≥30

Viscosity(25℃),mPa.s

8.02

4.00~10.00

Curing time(min)

5.0

≤10

Hardness of cured product 

82

≥80




Resistance to Chemicals and Solvents  

Passed U.S. Military Standard MIL-I-17563C tests

Conditions Tests

Environment 

Time 

Temperature 

Result 

Water 

14 days

100℃

No leak 

Oil 

14 days

99℃

No leak 

Hydrocarbon fluid 

14 days

23℃

No leak 

Carbon removal 

30 minutes

23℃

No leak 

Lubricating oil 

48 hours

121℃

No leak 

Turbine fuel 

48 hours

23℃

No leak 

Ethylene glycol 

14 days

149℃

No leak 

Hydraulic fluid 

14 days

99℃

No leak 

Fuel 燃料

48 hours

23℃

No leak 

Diester grease 

48 hours

23℃

No leak 

Sulphuric acid(18%)

2 hours

23℃

No leak 

Stoddard solvent 

48 hours

23℃

No leak 

Ethyl alcohol 

48 hours

23℃

No leak 





Passed the powder metallurgical ring tests specified in U.S. Military Standard MIL-I-17563C.

Environment

Time

Temperature

Result 

Heating 

100h

200℃

No leak 

Heat/freeze cycle 

180 days

-30℃~160℃

No leak 




Storage and Use

Storage environment: Be stored in a cool and ventilated place free from direct sunlight, can be stored for one year under normal conditions.
Protective measures:

Users shall wear work clothes, gloves, masks, goggles; pay attention to the ventilation of the workplace; after use, clean hands thoroughly.
Attentions:

This product is slightly irritating to skin, can not be directly contacted; is strongly irritating to eyes, avoiding to enter the eyes; pollutes water, shall not be discharged directly.
Accident disposal:

Skin contact: Wash with clean water and soap; entering eyes: Wash with flowing water; trachea inhalation: Immediately transfer to fresh air for rest and seek medical care.

For details, see MSDS.