Hylomar 102 RTV Silicone Sealant – 300ml (F/SL102HY/300M)

Description

Genuine Hylomar · Part no. F/SL102HY/300M

Safety: Danger. Causes skin irritation. Causes serious eye damage. Read the label before use.

Hylomar 102 is a 300ml neutral-curing, amine-type RTV silicone sealant, chosen for its tolerance of oil, particularly modern synthetic oils. It is the kind of formed-in-place gasket used on sumps, rocker and timing covers and gearbox housings, where an oil-resistant flexible seal is needed between metal flanges.

Good to know

• Why does oil tolerance matter? Modern synthetic oils can soften some sealants over time; this one is specified for its resistance to them, which suits engine and gearbox joints running full synthetic.
• What does neutral-curing mean for me? It doesn't give off the acetic (vinegar) vapour of acetoxy silicones, so it is kinder to metals and nearby parts as it cures.
• How do I apply it? Clean the flanges back to bare, dry, oil-free metal, lay a thin, even bead inside the bolt holes, assemble while it is still wet and tighten evenly.
• Is 300ml more than I need? It is a workshop size; for one cover at home a small tube goes further before it goes off once opened.

Which one?

For a single job, Wynns Grey Gasket Maker (36134B) is 80 ml; for transmissions and cast housings, Loctite SI5660 Silicone Sealant – Grey (2064521) is 100ml.

Key features

• 300ml
• Neutral-curing amine-type RTV silicone
• Tolerant of oils, including synthetic oils
• Forms gaskets on engine and gearbox flanges

Specification