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Idealseal Auto-Marine Polyurethane Sealant & Adhesive 300ml

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  • Free UK Delivery When You Spend £50 Or More On Ideal Products
From £4.13 (inc. VAT)
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Idealseal Auto-Marine Polyurethane Sealant & Adhesive one component moisture curing polyurethane sealant and adhesive. Has excellent adhesion to marine, automotive and most building substrates, is overpaintable, non-staining, fast curing with permanent and durable elasticity and can be sanded down. Once cured the product is inert and therefore suitable for applications involving aquatic organisms. This black polyurethane sealant is also ideal for use on expansion joints. Has first rate resistance to water and UV rays and has permanent elasticity under all climate conditions. Conforms to ISO 11.600 F25 HM. This product is commonly used as a car sealant, caravan sealant, marine sealant, pond sealant and general building sealant and adhesive.

Automotive- Ideal for a number of automotive applications. It will permanently seal and stick body panels and trim. Will seal around windows, doors, lights etc. It will stick to most materials such as steel, aluminium, glass and most plastics.

Marine- For above and below the waterline for the sealing of joints, bedding of fittings on the deck and hull, sealing around hatches and portholes, seam filling: structural adhesive and sealant. Excellent adhesion to most common surfaces including GRP, wood, marine-ply, glass and metals.

Pond- Designed to adhere to rubber pond liner. It is also ideal for sealing bottom drains, tank connectors, pipe inlets and surface skimmers. Please note the sealant has to be fully cured before introducing aquatic organisms.

Construction- For interior and exterior waterproof joints in building and metal constructions. For gluing, sealing, mounting and anchoring in building applications. For expansion joints in industrial floors and periphery of swimming pools. 


Surfaces must be sound, clean, dry and free from oil and grease. Any residues must be thoroughly removed prior to application of sealant. Priming is not usually necessary – most substrates only require priming if testing indicates a need. Once fully cured all harmful solvents will have evaporated off and the product will be safe for the introduction of aquatic organisms. Cut the cartridge seal and screw on the nozzle, which should be cut to your required size. Using a skeleton gun, apply the sealant firmly into the gap or joint ensuring a good solid fill, making sure no air is trapped behind. If required place masking tape along edges, removing within 10 minutes of application.

Delivery Rates

Delivery Services

Free delivery on orders over £50!*

*This offer applies to orders containing £50 or more of Idealseal or Idealband products

Economy delivery available on orders of non-hazardous goods under 2kg to selected areas for only £2.95. For standard delivery see below:


Standard 1-2 Working Day Delivery 

UK - England and Wales £5.00
UK - Scotland exc IV, KW, PA20-78, PH4-50 £5.00
Scottish Highlands and Islands and Northern Ireland £5.00
Isle of Man and Isles of Scilly £5.00

Delivery will be between the hours of 7am and 8pm; buyers using the courier service will receive a text message or email informing them of their delivery timeslot (subject to availability in their area).


Delivery can be to any address, as long the address at which your payment card is registered is also present on your order. All deliveries must be signed for, if the buyer requests the item(s) to be left in a designated safeplace Ideal Chemical Products Ltd (IdealSealants.com) will not be liable for any loss or theft of the item(s) once it has been delivered. Please make sure you keep the receipt enclosed with your goods.

All delivery timescales are subject to product and delivery slot availability. Delivery timescale can be found at the checkout. However whilst every reasonable effort shall be made to keep to any delivery date, time of delivery shall not be of the essence and Ideal Chemical Products Online (IdealSealants.com) shall not be liable for any losses, costs, damages or expenses incurred by the customer or any other person or company arising directly or indirectly out of any failure to meet any estimated delivery date. The risk in the goods shall pass from the company to the customer upon delivery of such goods to the customer.

Cancellation & Returns 

1.1 You may cancel your order by giving us notice of cancellation within 30 days of the date of delivery to you. Such notice may be given by phone, mail, fax or email. If you are cancelling because of any problem with the goods, please notify us of the problem at the time of cancellation.

1.2 On cancellation for whatever reason, you must return the goods to us at your cost unless we agree that you may dispose of them in which case please comply with the manufacturer’s instructions before disposing of hazardous goods. Where the goods are being returned because they are faulty*, incorrect goods or because of unsuitable substitution by us, we will meet the cost of return but we ask that you allow us to nominate the carrier. Once the product(s) have been received by us, your payment will be returned. *Goods are deemed faulty following manufacturer testing

1.3 If a decision has been made to return part of an order the buyer the refund will be calculated using the following formula:

Total Price Paid For Goods - Total Price Paid For Goods Retained By the Buyer - Advertised Price of Postage at Point of Purchase For Goods Retained By the Buyer = Refund

In a case where a buyer has been given a discount based on volume, this discount will now be null and void, and the following formula will be used to calculate the refund:

Total Price Paid For Goods - Advertised Price Paid For Goods at Point of Purchase Retained By the Buyer - Advertised Price of Postage at Point of Purchase For Goods Retained By the Buyer = Refund 

1.4 Where the sale is Business to Business we reserve the right to charge a 25% restocking fee plus the original cost of carriage.

Choose A Colour 1+12+ Quantity
White Idealseal Auto-Marine Polyurethane Sealant & Adhesive 300ml £5.05 (inc. VAT) £4.13 (inc. VAT)
Black Idealseal Auto-Marine Polyurethane Sealant & Adhesive 300ml £5.05 (inc. VAT) £4.13 (inc. VAT)
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