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Hylomar Hylosil 303 Clear Silicone 300ml Cartridge

Hylomar Hylosil 303 Clear Silicone 300ml Cartridge
Hylosil 303 Silicone Sealant is a Room Temperature Vulcanising (RTV) general purpose silicone sealant.
£9.70 excl VAT
£11.64 inc VAT
No stock - lead time 31 days
Please order in multiples of 12
Bulk discounts
£9.70 + VAT
£9.44 + VAT
£9.19 + VAT


  • Once applied the compound reacts with atmospheric moisture, to form a tough, durable rubber seal. It has excellent adhesion to metals, glass, ceramics and plastics.
  • The compound has large gap filling properties which makes it ideal for application to non-machined surfaces and even as cast surfaces.
  • Hylosil 303 Silicone Sealant is resistant to oil, water and lubricants.
  • It will remain flexible to withstand vibration


  •  (TOX NO 114935) P10341/2171A, P10341/2171B, 402403 (FOR 301), GL21582/GL21583

Orders over £50 placed online will now qualify for FREE UK Mainland delivery*

Orders under £50 placed online for UK Mainland delivery is £6.95*

Orders requiring Pre 10.00am Next Day delivery has also been lowered from £35.00 to £19.50** 

International delivery (door to door delivery) is available for selected countries worldwide. Shipping will be automatically calculated based on the weight, location and hazardous nature of the goods. Customers can also choose ex works to arrange their own collection.
Please refer to our delivery page for more information.

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Sil-Mid Limited DO NOT GUARANTEE that the information on this page is the most up to date information available from the manufacturer, there are times when updated information is released and we are not made aware immediately.