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Engine sealing compound silicone RTV 343

Engine sealing compound silicone RTV PRO

Art.-no. 0890324085
EAN 4046777019216

Prices for customers after login
Engine sealing compound silicone RTV 343

Art.-no. 0890324085

Prices for customers after login

Exclusively for trade customers

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Good adhesive and sealing compound for use in industry and the automotive sector
  • Permanently elastic silicone sealing

  • Outstanding adhesion

  • Excellent oil resistance

  • Outstanding resistance to chemicals

  • Sensor safe

These instructions are only recommendations, which are based on our experience. We advise preliminary testing before use.

Product information

Würth Catalogue(X)


Safety data sheet

Certificates/ Documents



Application area
  • Permanent elastic silicone sealing compound for engines and vehcile body.

  • For sealing surfaces, gaps and cracks. Such as oil sumps, thermostat housing, cylinder heads, crankcases,radiators, gearboxes, bodywork etc.
  • The area to be sealed must be dry and free of dust, oil and grease. The old sealant must be removed in full from the surface.

  • Apply a bead to one surface

  • Join the parts


85 ml

Chemical basis

Silicone natural rubber


1.02 g/cm³ / at 23°C, 50% relative humidity





Weight of content

85 g

Min. skin-formation time

5 min

Max. skin-formation time

30 min

Conditions for skin-formation time

at 23°C and 50% relative humidity

Elongation at break

600 %

Min./max. temperature resistance

-60 to 315 °C

Max. short-term temperature resistance

343 °C

Min./max. processing temperature

5 to 45 °C

Shelf life from production

18 Month

Conditions to maintain shelf life from production

cool and dry storage area below 25°C

Cust. Mat. No.

Hazardous Material

Product information

Würth Catalogue

Catalogue page as PDF  | 


Datasheets ()

CAD data  | 

Certificates/ Documents



Technical information