• Marine-grade RTV silicone that cures at room temperature
• Non-shrinking and stays flexible once set
• Unaffected by UV, ozone and salt water
• Suitable for below-the-waterline and exterior marine applications
• Five colours: white, clear, grey, brown and black
• 310 ml cartridge, single or trade box of 25

First, make sure surfaces are clean, dry and free from grease, salt and old sealant.

Next, cut the nozzle to the joint width and gun a full, even bead, then tool it before it skins.

Then let it cure fully before immersion or heavy weather. As an RTV silicone it cures at room temperature without heat.

Finally, because it resists UV, ozone and salt water, it suits boats, marine fittings and exposed exterior joints where a standard silicone would degrade.

• Product code: BDHA6 range
• Type: marine-grade RTV (room temperature vulcanising) silicone sealant
• Colours: white, clear (trans), grey, brown, black
• Resistance: UV, ozone and salt water
• Properties: non-shrinking, stays flexible
• Use: below-waterline and exterior marine applications
• Cartridge: 310 ml
• Pack sizes: single cartridge or trade box of 25

What makes HA6 marine grade?

It is an RTV silicone that resists UV, ozone and salt water and does not shrink, so it holds up below the waterline and on exposed marine and exterior joints where ordinary silicone fails.

Can I use it below the waterline?

Yes, it is suitable for below-the-waterline and exterior marine applications once fully cured.

Does it need heat to cure?

No. RTV means room temperature vulcanising, so it cures at normal temperatures without heating.

Will it shrink or crack?

No, it is non-shrinking and stays flexible once set, which keeps the seal intact under movement and weather.

Which colours are available?

White, clear, grey, brown and black, so you can match hulls, fittings and trims.

Is it the same as a bathroom silicone?

No. HA6 is a marine/exterior silicone. For bathrooms and wet rooms use a sanitary silicone such as S3 or Xtreme anti-mould.