Dowsil 4 Compound should not be applied to any surface which will be painted or finished. Such coatings may not adhere to the silicone-treated surface. If contaminated by a silicone coating, parts can be wiped or washed with solvent, washed with detergent, or immersed in an alcoholic potassium hydroxide solution and then rinsed in clear water before painting.
- A moisture proof seal for aircraft, automotive and marine ignition systems and spark plug connections, disconnection junctions in electrical wiring systems also in electrical assemblies and terminals.
- Used as a seal and lubricant for cable connectors, battery terminals, rubber door seals, switches and rubber and plastic O-rings and as an assembly lubricant for various metal-on-plastic and metal-on-rubber combinations.
- High dielectric strength
- Low volatility
- Moisture resistant
- Good thermal oxidation and chemical stability
- Conforms to FDA 175.300, NSF 61 and NSF 51
- Meets requirements of SAE AS 8660
- Retains its grease like consistency from -55C (-67F) to +200C (392F)
- Highly water repellent
- Adheres readily to dry metals, ceramics, rubber, plastics and insulating resins
Delivery times explained
|Delivery option||Price||Delivery time|
|Standard Delivery||£5.95||Delivery within 2 working days|
Free Delivery (Orders over £30 only)
|Free||Delivery within 2 working days|
*Refers to UK Mainland addresses only. Delivery to Northern Ireland, Southern Ireland, Isle of Wight and Highlands are subject to a 2 day delivery minimum.
Free Delivery - All orders over £30 Ex VAT
Any order over £30 Ex VAT will qualify for free delivery. These orders are sent via Parcelforce or DHL.
Standard Delivery - £5.95 +VAT
For standard delivery, we use both Parcelforce and DHL depending on the size of the parcel. All orders are sent on a 24 hour service.
Large items such as Mirka sanding kits and ZipWall kits are shipped on a pallet using a specific pallet service. This is the safest way to dispatch large items in order to protect your products and ensure they arrive as a complete delivery. Items that require a palletised delivery will be indicated both on the checkout and at the point of choosing your delivery option at the checkout. There is no additional charge for a palletised delivery, this is purely to ensure your order arrives in the best condition possible.
Important: Our palletised deliveries are curb side only and the driver will not be expected to carry the items to your home or business.
Premium Delivery (Before 12pm) - £9.99
Our premium delivery service is guaranteed next day before 12 pm and will require a signature. Only orders placed before 2pm Monday - Thursday will be given the premium delivery option.
Saturday Delivery - From £11.99
We are able to offer a Saturday delivery before 5:30 pm service. Orders must be placed before 1pm on a Friday to qualify for this service. Both services require a signature.
Items that are classed as hazardous will be subject to higher shipping tariffs. Please note that shipping fees for hazardous goods apply to all orders and there is no free delivery option.
Hazardous item shipping rate (UK): £62 +VAT
Standard delivery to all areas of Ireland are charged at €9.99
We do not currently accept online orders to Europe. However, we are able to ship to Europe but orders must be placed by phone. Please call +44 (0)1827 255250 for more information.
Order cut-off times
All orders placed after 2pm Monday - Thursday will be sent by courier on next day delivery but will arrive 2 days after placement of the order.
Any orders placed on a Friday before 1pm will be sent by next day courier and will arrive the next business day (Monday) unless Saturday delivery is chosen.
*We aim to deliver items as quickly as possible. We use third-party couriers and delays can happen due to traffic incidents, weather and other incidents that are out of our control. We will always try and keep you up to date with any delays that may occur.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.