3M Scotch-Weld Black Sealant

3M Sealant, +80°C Maximum Operating Temperature, -30°C Minimum Operating Temperature - 7000079794

This sealant is a black synthetic rubber formulation produced by 3M under the Scotch-Weld trade name, designed to provide sealing and adhesive performance across a range of temperatures and service conditions. It is suitable for installation where a resilient, dark-coloured joint filler or adhesive-sealant is required and where materials must withstand both moderately low and elevated thermal environments.

Features and Benefits:

• Operates at temperatures up to +80°C to withstand heat exposure
  Performs down to -30°C for low-temperature resilience
  Black finish for discreet joints and visual uniformity
  Synthetic rubber base for elasticity and movement accommodation
  Suitable as an adhesive sealant for joint bonding requirements

Applications

• Used for sealing expansion gaps in building fabric
  Suitable for automotive joints on high-traffic surfaces
  Ideal for commercial-grade flooring transition seals
  Used with metal and composite substrates requiring black sealant
  Suitable for weatherproofing external perimeter joints

How does it behave when exposed to wide temperature swings?

It retains flexibility over repeated cycles between -30°C and +80°C, reducing crack formation under thermal movement.

Can it be used where continuous traffic loads occur?

Yes
its formulation supports use in heavy-traffic areas where a resilient, compressible seal is required.

What visual characteristics should be expected after curing?

The cured material presents a consistent black appearance intended for unobtrusive joints and seams.

Is the material intended to accommodate substrate movement?

The synthetic rubber composition provides elastic recovery to absorb differential movement at sealed joints.