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Aeroshell Ascender *MIL-PRF-23699 HTS Grade *SAE AS5780A HPC Grade *O-154 *OX-27 in various sizes

Aeroshell Ascender *MIL-PRF-23699 HTS Grade *SAE AS5780A HPC Grade *O-154 *OX-27 in various sizes

Please select a size.

AeroShell Ascender is a high performance, low coking, 5 mm2/s synthetic hindered ester base stock combined with a state of the art additive system to both improve thermal and oxidation stability and provide superior elastomer compatibility.


  • Excellent elastomer seal compatibility
  • Low coking performance Improved oxidation and thermal stability
  • Excellent compatibility with other approved oils
  • A ‘ High Performance Capability grade oil

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.

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.