Primer O Rings

How to keep the Cessna 170 flying and airworthy.

Moderators: GAHorn, Karl Towle, Bruce Fenstermacher

Post Reply
Mark A
Posts: 39
Joined: Mon Sep 23, 2019 5:44 pm

Primer O Rings

Post by Mark A »

Anyone have a model number for replacement O rings for the primer? Aircraft is 1951 170A. Thanks
Mark A
Posts: 39
Joined: Mon Sep 23, 2019 5:44 pm

Re: Primer O Rings

Post by Mark A »

I should have wrote “part number.”
User avatar
dstates
Posts: 472
Joined: Sun Jun 30, 2019 5:50 pm

Re: Primer O Rings

Post by dstates »

This is the primer kit I got from Aircraft Spruce that worked great. All it has is two o-rings (if I was at the hangar I could give you the individual o-ring part numbers) and some fuel lube. Unfortunately they show they are out of stock right now.
primer_kit.jpg
N1235D - 1951 170A - SN: 20118
Mark A
Posts: 39
Joined: Mon Sep 23, 2019 5:44 pm

Re: Primer O Rings

Post by Mark A »

Thanks
User avatar
GAHorn
Posts: 20968
Joined: Fri Apr 12, 2002 8:45 pm

Re: Primer O Rings

Post by GAHorn »

'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. ;)
User avatar
gfeher
Posts: 571
Joined: Fri Sep 26, 2014 9:19 pm

Re: Primer O Rings

Post by gfeher »

The part numbers of the O-rings themselves are MS29513-012 (70 Duro Nitrile /“fuel resistant” NBR); or NAS1593-012/M83248/1-012 (fluorocarbon synthetic rubber -”Viton”). MCM83248/1-012 is McFarlane’s part number for it's FAA-PMA Viton replacements, but as George pointed out, McFarlane also sells them in pairs in a replacement "kit."
Gene Feher
Argyle (1C3), NY
'52 170B N2315D s/n 20467 C-145-2
Experimental J3 Cub Copy N7GW O-200
Mark A
Posts: 39
Joined: Mon Sep 23, 2019 5:44 pm

Re: Primer O Rings

Post by Mark A »

Thanks All
Mark A
Posts: 39
Joined: Mon Sep 23, 2019 5:44 pm

Re: Primer O Rings

Post by Mark A »

This worked really well and was easy. Open primer and spray in notch to lubricate O rings.
Attachments
Silicone Spray.jpg
Post Reply