Topic: o ring – Antique Outboard Motor Club,Inc

This topic has 14 replies, 7 voices, and was last updated 3 years, 3 months ago by Evinrude 25.

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January 15, 2021 at 4:57 pm #227803
GLEN DEUTSCH
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US Member - 1 Year (includes $3 online payment fee)
Anyone have any experience with a company called Rehber. They have shift rod o rings cheaper than anywhere I have found. Been burned with scams before.
January 15, 2021 at 6:05 pm #227807
outbdnut2
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US Member - 1 Year (includes $3 online payment fee)
Never heard of them. If you have the measurements of the O-Ring, McMaster is the place to go – you get a big bag for the price of a couple OMC supplied O-rings. Link below.
Dave

McMaster website
January 16, 2021 at 8:47 pm #227956
GLEN DEUTSCH
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US Member - 1 Year (includes $3 online payment fee)
Using the size chart, I looked at McMasters, O- Ring store, Graingers and many others. None have the right size. According to the chart, it is an odd size
January 17, 2021 at 12:30 am #227963
Mumbles
Participant
The OMC 307877 and Sierra 18-7100 O ring specs are .245 ID x .155 thick. Merc/Force/Chrysler equivalent O ring slightly different at .239 ID x .174 thick. No data for Mallory 9-76509 or GLM 45230.
January 17, 2021 at 5:50 am #227973
billw
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US Member - 2 Years
GLEN DEUTSCH wrote:

Using the size chart, I looked at McMasters, O- Ring store, Graingers and many others. None have the right size. According to the chart, it is an odd size

I agree. I have spent some time looking for these in bulk and have not even come close to the right size. I hope somebody has an answer!

Long live American manufacturing!
January 17, 2021 at 8:07 am #227977
frankr
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US Member - 1 Year (includes $3 online payment fee)
McMaster has ’em. At least as close as you are going to get. Wanna know a trick? Stack two of them in each hole for an even better seal.
January 17, 2021 at 6:23 pm #228034
GLEN DEUTSCH
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US Member - 1 Year (includes $3 online payment fee)
Thanks everybody, esp frankr. I ordered the McMaster. Using two at a time sounds good.
January 18, 2021 at 6:25 am #228065
Steve D
Participant
What o-ring are you looking for? The OMC 301877 and Sierra 18-7100 o-ring that Mumbles mentions is for the shift rod. The one Frank is referring to is for the dual hose fuel connector.
January 18, 2021 at 11:15 am #228076
GLEN DEUTSCH
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US Member - 1 Year (includes $3 online payment fee)
Looking for the shift rod O-ring. It is an odd size measured in 1/128 increments. Answering this from work, so I don’t have the numerator .Rehber is the only place I have found some. I think I will just order a minimal number and see what happens. Would be nice to have source that doesn’t charge an arm and a leg
January 18, 2021 at 11:41 am #228078
Evinrude 25
Participant
The shift rod O-ring OD is 0.245. #107 O-Ring from Mc_mastercarr the OD is 0.206.
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