170B fuel cap gasket

How to keep the Cessna 170 flying and airworthy.

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Richgj3
Posts: 189
Joined: Wed May 27, 2020 3:13 pm

170B fuel cap gasket

Post by Richgj3 »

I searched for and ordered one from Spruce. What I got was a gasket in a package marked “170 and195”. It’s way too big. Since I know the caps are the same as a 172 I sent an email to Spruce and they seem confused. So, since I don’t know much about the rag wing, do they use different and larger caps than the B model?
Rich Giannotti CFI-A. CFI-I SE.
1952 C170B
N2444D s/n 20596
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sfarringer
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Joined: Wed Jan 12, 2005 10:49 pm

Re: 170B fuel cap gasket

Post by sfarringer »

Yes, the Ragwing uses entirely different tanks and caps.
Ragwing S/N 18073
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GAHorn
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Joined: Fri Apr 12, 2002 8:45 pm

Re: 170B fuel cap gasket

Post by GAHorn »

Here’s what will work for you. $2. https://www.aircraftspruce.com/catalog/ ... ckkey=7373

1-1/2" ID, 2-1/4" OD, 1/8" Thick.

This also fits the oil/sump cap, and the gascolator.

We have a charter member (old timer) who never visits the forums who sent me a letter recently telling me how difficult it was for his IA to find gascolator gaskets.... but finally found them for only $27 each, and sent me the contact info for the source. I’m debating if I should tell him about this.

Warning: Do NOT use EPDM (so-called “silicone rubber” the stuff often used for “Real Gaskets” rocker covers and baffle seal) gaskets for the gascolator. They will swell, deform, and suddenly dump your fuel out the lower cowl opening, perhaps in-flight.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
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Richgj3
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Re: 170B fuel cap gasket

Post by Richgj3 »

Thank you both.
Rich Giannotti CFI-A. CFI-I SE.
1952 C170B
N2444D s/n 20596
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mschlender
Posts: 134
Joined: Mon Jun 03, 2002 1:27 am

Re: 170B fuel cap gasket

Post by mschlender »

Wag aero has them too
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