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HomeAircraftHelicopterEngines Plugs Mufflers Fuel › Permatex High-Temp RTV to glue in a clutch liner - OK?
01-24-2013 05:22 PM  5 years agoPost 1

rrKey Veteran

Morgan Hill, CA. USA

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I normally use JB Weld to glue in my clutch liners.
I've never had a problem with delimitation and the liner stays secure the life of the liner.
But, when I use the JB Weld, it takes about an hour to clean out the clutch bell and be ready to glue a new liner. The clean out takes lots of heat, scrapping, Dremeling and clean-up.

I am trying something new - Permatex High-Temp RTV Silicone Gasket Maker (orange color).

I already installed the liner. It went in okay and cleaned up nice. But I haven't flown it yet.

This is a Raptor 90 with a YS 91SR-3DS - so there is some strain on the liner / glue.

A new OEM bell comes with the liner pre-installed and they use a thin blue glue of some kind. It lasts the life of the liner and cleans out easy when replacing it. But, I have no idea what it actually is.

Has anyone used the Permatex High-Temp RTV Silicone Gasket Maker when replacing a clutch liner?
Did I make a big mistake here?

I would rather pull out the new liner and replace it with another using JB Weld than fly it as is and have something weird happen with the Permatex.

01-25-2013 02:49 AM  5 years agoPost 2
John Krebs


Pittsburgh, PA

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I don't think it would be strong enough. I've used JB weld but now use 5 min epoxy. I know some guys that use slow set super glue.

01-25-2013 03:20 AM  5 years agoPost 3

rrKey Veteran

N. Tonawanda, NY

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JB Weld is very heat resistant and hard to remove plus it is very thick causing the liner to not always conform to the bell.

Any of the common epoxies (5, 15, 30 minute) remove easily with heat and require very little additional clean up. These are the simplest glues I have found to use on liners both on install and removal.

It may work, but RTV would not be my first choice.

01-25-2013 05:58 AM  5 years agoPost 4


Cedar Rapids, IA

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30 minute epoxy is the way to go. Plenty of time to get it installed, holds well, easy to remove when needed. Juat about anything else is overkill.


* Making the World Better -- One Helicopter at a time! *

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01-25-2013 06:24 AM  5 years agoPost 5

rrElite Veteran

Shelby TWP,Mi

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I tried JB-Weld and 30 minute epoxy,JB-Weld works MUCH better..If you put a tiny coat on the inside of the clutch bell with your finger,you won't have issues like others have and its very easy to remove.Takes a whole 3-4 mins to remove the old liner and JB-Weld.

01-25-2013 01:56 PM  5 years agoPost 6

rrElite Veteran

Brooklyn, N.Y.

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The Permatex will not hold the clutch liner. JB Weld or Epoxy will work best.

Wayne - Fly it like you stole it! You're in good hands with Runryder!

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