Part# 06-13400
MFR Model# AS261 KIT 1
DescriptionPart No.
3 Strut Kit - Single Engine (8 oz)06-13400


Landing gear strut packing seals shrink due to fluctuating weather conditions and age. This specially engineered hydraulic chemical additive leaves a protective coating on the strut shaft and allows the seal to expand to its normal size. It will stop strut leaks and is an excellent lubricant and corrosion preventative. Application is fast and easy - any owner or pilot can do the job in minutes. FAA approved.

Manufacturer has no stated shelf life.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


Great product, worth the effort of replacing the strut fluids.

Glenn C Verified Purchase


October 27, 2022

Best on the market for a strut

William T Verified Purchase


June 10, 2022

Seal worked perfectly and save me $2500.00 on a new nose wheel strut for my Cirrus SR22T.

November 16, 2020

Works great

January 9, 2020

Purchased Granville Strut Seal and some 5606H. Used this with the Bogert Strut Filler Tool. Outstanding results! Easy peasy. Clean and efficient!

Christopher N
October 29, 2019

This stuff is UNBELIEVABLE!!! I had a completely flat front strut that wouldnt hold air whatsoever. The existing fluid level was at about 75% full but the strut cylinder was wet from obvious fluid leaking. My mechanic told me about this stuff (expensive as it may be) and I decided to give it a shot. Everyone else said I need to rebuild the strut with new rings so I ordered a rebuild kit too. We inserted the Granville to see if it would work and it is absolutely a miracle cure. One week later and about 8 crosswind take off and landings its still holding strong. $50 bucks for 4oz but it saved me about $300 in strut rebuild labor.

October 14, 2019

We keep it in stock at our maintenance hangar. Every strut re-seal we use it. Have never had a comeback with a strut issue.

Sunset E
August 12, 2019

Im skeptical about snake oil products and ordered the strut rebuild kit at the same time to have on hand. Bottom line is I have a strut rebuild kit for sale if anyone is interested?!

July 11, 2019

Gary M
June 15, 2019

Has always worked well...have used it for years.

Ronald H
April 6, 2019


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: How many ounces of Granville strut seal fluid come in a three strut kit? I bought a kit some time back and not sure if it is a three strut or single strut kit.

We have modified the ordering chart to include the sizes of each product. Please review it on this web page.

Q: What is the strut additive and is it needed with the sealing kit?

The additive is in each kit. The additive is available in a pint size only, if the user already has the applicator in the kit.

Q: Is the Granville strut seal considered hazardous goods?

No, this is not considered hazardous material.

Q: Would you recommend using the product after you rebuild your struts with new O Rings?

You shouldn't need this on a freshly rebuilt strut, only if you are having slight leaking issues.

Q: Any special tools needed to put this in the strut?

It gets mixed in with the 5606 when you service the strut, you would only need the tools required to perform the strut service.

Q: Is this compatible with Mil-Spec: MIL-PRF-83282, such as Royco 782?

Per the manufacturer, no it has not been tested with 782.

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