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Gaskets

WACKER silicone rubbers possess excellent sealing and adhesive properties, are resistant to heat and fluids, and have excellent durability. This functional reliability helps to keep the occupants safe. Especially in the engine compartment, our silicone grades seal reliably under demanding conditions, such as high temperatures, constant vibration, and contact with fluids. Silicones are also an integral part of solid gaskets with their rugged multi-layer structure.

Benefits:

  • High heat stability
  • Very good resistance to fluids

Applications:

  • Cylinder-head gaskets
  • Impregnation of substrate materials (whether or not they contain sulfur)
  • Gasket contour can be screen printed
  • Topcoats for surface sealing

产品推荐

表格可上下滚动
个产品
技术数据
Viscosity, dynamic Hardness Shore A Breaking strength Elongation at break
ELASTOSIL® A 4 21000 cP[1] 21000 cP[1] 50[3] 50[3] - - 100 % 100 %
ELASTOSIL® A 8 90 cP[1] 90 cP[1] - - - - - -
ELASTOSIL® A16 BLUE 30000 mPa·s[2] 30000 mPa·s[2] 65[3] 65[3] 2.76 mPa 2.76 mPa 50 %[4] 50 %[4]
说明
[1] Viscosity, dynamic | 25 °C | WSTM-2103,  [2] Viscosity, dynamic cP | 25 °C | WSTM-2103,  [3] Hardness Shore A | WSTM-1110,  [4] Elongation at break | WSTM 1228,  [] 适合,  [] 非常适合,  [] 极其适合 

Benefits:

  • Fuel, oil and chemical resistance
  • Oil-bleeding
  • Flame resistant
  • Heat resistance over a wide temperature range (from -90 °C to +300 °C).

Applications:

  • Molded Seals
  • Engine gaskets
  • Oil-pan seals
  • Coolant-system seals
  • Sealing mats used in multipin plugs and for single-wire and radial seals

Benefits:

  • Highly versatile processing
  • Simple processing
  • High cost-efficiency
  • Nondestructive disassembly possible
  • Integrated gasket

Applications:

  • Radiator gaskets
  • Sealing of water pumps and oil pumps
  • Housing seals
  • Sound and heat insulation
  • Shock and vibration decoupling

Product Recommendations

Table is scrollable
Products
Technical data
Product properties
Viscosity, dynamic Tear-growth resistance Hardness Shore A Tensile strength Elongation at break Hardness Shore 00 Resistance Product Rheology Crosslinking Property Vulcanizate
ELASTOSIL® E4 - - 7.3 N/mm[1] 7.3 N/mm[1] 15[2] 15[2] 2 N/mm²[4] 2 N/mm²[4] 750 %[7] 750 %[7] - - - Non-slump - -
ELASTOSIL® RT 624 "4S" A/B VS 60000 mPa·s[10] 60000 mPa·s[10] - - - - - - - - - - - - - -
ELASTOSIL® RT 713 - - - - - - - - - - - - - Non-slump Fast curing under heat, One-component, Addition Curing Foam, Compressible
ELASTOSIL® RT 723 A/B 600000 mPa·s[11] 600000 mPa·s[11] 13.8 N/mm[1] 13.8 N/mm[1] - - 5.9 N/mm²[5] 5.9 N/mm²[5] 500 %[8] 500 %[8] - - Media resistant, Heat resistant, UV stable - Fast curing under heat, Two-component, Addition Curing -
ELASTOSIL® RT 773 - - 4.7 N/mm[1] 4.7 N/mm[1] 35[2] 35[2] 1.2 N/mm²[5] 1.2 N/mm²[5] 75 %[8] 75 %[8] - - Media resistant Shear thinning, Thixotropic, Non-slump Condensation-curing, Two-component Self-adhesive, Compressible, Low density, Electrically insulating
ELASTOSIL® SC 870 A/B 40000 mPa·s[12] 40000 mPa·s[12] - - 8 - 12[3] 8 - 12[3] 350 kPa[6] 350 kPa[6] 100 %[9] 100 %[9] 40 - 60[13] 40 - 60[13] Heat resistant Thixotropic Two-component, Addition Curing Foam, Compressible
Legend
[1] Tear-growth resistance | ASTM D 624 B,  [2] Hardness Shore A | DIN ISO 48-4,  [3] Hardness Shore A | DIN ISO 48-4 | (with skin),  [4] Tensile strength | ISO 37 type 1 | Type 3 / 23°C / 2mm,  [5] Tensile strength | ISO 37 type 1,  [6] Tensile strength | ISO 1798,  [7] Elongation at break | ISO 37 type 1 | Type 3 / 23°C / 2mm,  [8] Elongation at break | ISO 37 type 1,  [9] Elongation at break | ISO 1798,  [10] Viscosity, dynamic D = 0.5 1/s | 25 °C | DIN EN ISO 3219,  [11] Viscosity, dynamic | 25 °C | 0.5 1/s | DIN EN ISO 3219,  [12] Viscosity, dynamic | 23 °C | Brookfield | Spindle 5, 2.5UPM,  [13] Hardness Shore 00 (with skin) | ASTM D 2240,  [] Suited,  [] Well suited,  [] Ideally suited 

Unlike inserted gaskets, FIPGs do not require the mating surfaces to have high dimensional accuracy. In addition, the cured gasket material remains securely in place without the need for additional fixing. These two aspects allow wider part tolerances and lower the cost of parts development.

Benefits:

  • Effective bonding
  • Highly stable joint
  • Uniform stress distribution and perfect stress relaxation
  • Versatility
  • High cost-efficiency

Applications:

  • Oil-pan gaskets
  • Gearbox seals
  • Headlamp bonding
  • Sealing housings against moisture and the effects of weathering