Granville High Temperature Instant Gasket – Black – 200ml (0458A)

Description

Genuine Granville · Part no. 0458A

Granville High Temperature Instant Gasket is a black silicone gasket maker in a 200ml power can, rated for intermittent heat up to 300 Deg C. It replaces or backs up cut gaskets on engine and gearbox covers, sumps and housings, and the pressurised can lets you lay an even bead with less waste than a tube.

Good to know

• Can I use it instead of a gasket? On flat flanges that were sealed with a formed bead or that the maker allows to be sealed that way, yes; where a precise-thickness gasket sets a clearance, such as some timing or pump housings, fit the proper gasket.
• How thick should the bead be? A thin, even bead run inboard of the bolt holes is enough; too much squeezes into the engine and can block oil ways and strainers.
• How do I prepare the faces? Scrape off every trace of old gasket, then clean the flanges dry and oil-free; silicone won't seal on oily metal.
• What does 300 Deg C intermittent mean? It copes with short peaks of that heat, so it suits engine covers and housings, not exhaust manifold joints.

Which one?

For a tube you can carry in a toolbox, Wynns Red Gasket Maker (36144B) is 80 ml; for gearboxes and cast housings, Loctite SI5660 Silicone Sealant – Grey (2064521) is made for those.

Key features

• 200ml power can dispenser
• Black high temperature silicone
• Intermittent heat up to 300 Deg C
• Controlled application with less waste
• Forms gaskets on engine and gearbox covers

Specification