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Method of Dispensing Gasket

Home > Products > Method of Dispensing Gasket

Method of Dispensing Gasket


Doo Sung ‘s Dispensing Gasket newly upgraded gives excellent EMI Shielding effect, good electric grounding, waterproof and general environment sealing in many applications. This Dispensing Gasket is manufactured by Auto-Dispensing machine attached to CNC-Robot (X-Y-Z axis). This Gasket is providing the customers’ process that is suitable for cost-down in mass production, and Doo Sung can provide the precision CNC-Robot with fixture and the 1-Part Conductive Silicone, which is made of silver and silicone, on a full package sales, including knowledge.

The Variable Affecting the Quality of Dispensing Gaskets

  • Constant pressure applied
  • Material of substrate
  • Moving speed
  • Material of sealants
  • Surface of substrates
  • Size of nozzle
The Variable Affecting the Quality of Dispensing Gaskets
Moving Speed is reasonable Moving Speed is too fast Moving Speed is too slow
Good Result Poor Result Poor Result

Structure and Design

Design of Rib and Gasket
  • a.10~20% pressing of gasket is recommended for ideal EMI Shielding Effect.
  • b. B' is dependent on desired cross section of gasket when it is pressed.
  • c. If C'=0.3, C=0.38~0.45 and if C'=0.4, C=0.48~0.52.
Structure and Design
Division Specification
A : Rib width Min 0.5
A’ : Gasket width before pressing Min 0.4 (Max 80% of A)
B : Gasket width after pressing Max A
B” : Gasket width after pressing
- Gasket width before pressing
Max 2B’ + B < A
C : Gasket height before pressing Max A’, Min. 50% of A'
C’ : Gasket height after pressing Min 90% of C
C” : Gasket height before pressing
- Gasket height after pressing
C”= Min 10% of C

Cartridge packaging

Al cartridge


  1. Shelf life extended (2 Month)
  2. Less damage risk
  3. Content 600g [app 310cc]
    * PE cartridge is also available
Injecting time to barrel 20sec


* Supplied barrels for cartridge type’s order, injector which is made by DSIC supplied with extra charge.
Supplied cleaner for injector purchaser.

Cartridge packaging - Standard size of packaging box
No. Contents Material Dimension (mm) Standard Quantity of Cartridge
b I T
Inner box PU foam 345 340 230 16 Cartridge
Carton box SK3SA 355 350 250

How to order

P/N : 1.ID - CSS - 2.AAA - 3.**g - 4.BBB

  1. Serial Number
  2. Type : A, AS, N, NS
  3. Needed Weight
    • Syringe type : order in a barrel by 100g ex) 100g, 200g,··········, 5000g, etc
    • Cartridge type : order in a cartridge by 600g ex) 600g, 1200g, ··········, 4800g, etc
  4. Packing type
    • None : Syringe type
    • CT : Cartridge type

Test Method

Test Method
Surface Resistivity Point-to-point method
Viscosity #2 EZ Zahn Cup
(EtOH : paste=1 : 1 at volume ratio)

Quality Perform (SE)

Quality Perform (SE) img

Application Parameters

Application Parameters
Spray Gun HVLP (High Volume Low Pressure) gun
Pressure 2kgf/cm2 (28 psi)
DooSung paste must be homogenized carefully before use, under mechanical mixing at medium speed.
During the application, it is necessary to mix the paint from time to time to avoid sedimentation.

Safety Data

Safety Data
Precaution General precaution in use for the application of paints containing solvents.
Flammable product. Therefore never handle near a flame.
Labeling Part No., Lot No., Manufacture Date, Quantity, Manufacturer
Documentation Outgoing Inspection Sheet
Storage Product shelf life is 6 months from the date of manufacture while stored under original seal.
Store in a cool, dry location at temperatures between 15~20℃

How to order

P/N : 1.IDP — 2.AAA

  1. Serial Number
  2. Materials Type
    - 01S : solvent-based system