25 x Bond It HA6 Silicone Sealant High Mod RTV Marine Grade

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25 x HA6 RTV Marine Silicone Sealant Adhesive Aquarium Safe Fish Salt Water Tank

HA6 Marine Silicone is a high quality, high modulus, non-shrinking, marine grade silicone sealant and adhesive - ideal for home aquariums, fish tanks, terraria and vivaria. Perfect for professional use in engineering applications such as in-situ gaskets and seals for pumps and pipe work. This RTV adhesive and sealant is unaffected by UV, ozone, salt water immersion and extreme temperatures.

HA6 is a great all rounder it is ideal for use on glass, ceramics, anodised aluminium, primed metals, timber and many plastics. It can also be used as a dust and weatherproofing seal for cabinets in dirty environments and external applications.

HA6 High Modulus Marine Sealant is available in White, Black, Brown, Grey or Clear. Please note that the pack will contain the same colour as selected in the dropdown, we are unable to mix packs of differing colours.


  • Contains no fungicides or oils
  • Conforms to BS5889:B
  • ISO 11600-G-20HM
  • Exceeds the requirements of EN15651-1, 2:2012
  • Copes with extreme temperatures
  • No leaching of fungicides or oils
  • Marine and Freshwater aquarium safe
  • High modulus (less flexible and withstands repeated cleaning)
  • Marine grade silicone unaffected by salt water
  • Unaffected by UV and ozone
  • Does not shrink

What's in the pack?

1 x 25 Pack of HA6 RTV Marine Silicone Sealant


  • Aquaria, Terraria & Vivaria - bonding, bedding and sealing
  • Pumps and pipe work - in-situ gaskets and seals
  • Dust proofing and weatherproofing
  • Curtain walls
  • Cladding and Bedding
  • Ideal for use on glass, ceramics, anodised aluminium, primed metals and timber and many plastics

Preparation and Application:

Ensure all surfaces are clean, dry, and free from grease, oil or any other contaminants that may hinder adhesion. Prime porous surfaces and metals other than anodised aluminium or stainless steel for optimum adhesion

Apply using a standard sealant gun with the nozzle cut at an angle of 45°, and to an opening slightly larger than the joint to be sealed. For sealing and bedding apply in the normal fashion and tool to a smooth finish one or two minutes after gunning. As an adhesive bring the two surfaces together before skinning commences and do not stress the joint before the silicone has developed strength. As a gasket apply to one surface and if the joint is to be broken allow a strong skin to develop before compressing for permanent gaskets the joint can be sealed immediately. Clean away any excess with white spirit.

When using in aquarium assembly please refer to separate sheet for advisory guidance which is shown in the gallery.


Not suitable for use on bitumen, asphalt, natural stone or unprimed metals.

Not suitable for use as a mirror adhesive.

Do not apply at temperatures below 5°C or above 30°c.


Cool dry conditions between 5°C and 25°C; 24 months from manufacturing date.

We aim to deliver your products as quickly as possible. Orders taken before 12:00pm will normally be dispatched the same day. Orders taken after 12:00pm on a Friday will be dispatched the following Monday. For all Next Day Delivery Services (next working day excluding Saturday's) please order before 12:00pm for same day dispatch. Depending on the delivery service selected on checkout, we either use a next-day courier service, Royal Mail Tracked 48 or Royal Mail Tracked 24 postage service.

Free Shipping

Free shipping is available for all order over £10.00, delivery time estimates for free delivery is 3-5 working days.

No Quibble Money Back Returns Policy

Shop with absolute confidence knowing that if you are not satisfied for any reason we will refund the full purchase price providing you return the item within 30 days and in the same condition as when dispatched. Except for those cases where an item proves to be faulty, damaged on delivery or incorrectly described, return delivery charges and postage expenses are not refunded.

How do I return Items?

If you need to return an item please log into your account and click on the orders tab. Locate the order you wish to return and on the right click on 'Return Items?' You will then be taken to the returns tab; on the right hand side enter the quantity you wish to return; then on the left below the item, select the return reason and then the return action (whether you would like a replacement or a refund). If a replacement is not available, we will issue you a refund. There is a comments box to the right if you need to enter any more details.

Once you are happy that all the details have been correctly entered then click on the 'Submit Return Request' button. You will then be sent a return request email from JCP Hardware with instructions.

If you have placed an order as a guest and you wish to return it, then please email.

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