September 26, 2018 at 6:46 pm #11355
I have a plastic single hose connector. It has no identification but does say made in U.S.A. The oring inside the connector is out of place. Is it possible to remove the oring and replace with a new one? Same procedure as for the OMC metal connectors for double lines? What size is the oring? Or should I just replace the conector as it is only plastic?
Canada Member - 1 Year
Topics: 160September 26, 2018 at 7:49 pm #83566
if the oring is just… out of place why not try to just reposition it ….push down on the plunger with a flat nail head to free up the oring and try to pop it back in place then release the plungerSeptember 26, 2018 at 8:23 pm #83567
If we dare assume it is an OEM OMC connector, the o-ring is part number 303598. Snag the old one with a home made wire hook and drag it out. Squeeze the new one double and slide it in & straighten it out.
US Member - 1 Year
Topics: 61September 26, 2018 at 8:37 pm #83568
Sometimes a bit of a pain but saves some money.
I would avoid Sierra…I like the way they have a warning sign near them.September 26, 2018 at 8:39 pm #83569
Thank you very much. For this and lots of other assistance.September 26, 2018 at 8:41 pm #83570
Thank you Steve. Appreciated very much.
US Member - 1 Year
Topics: 70September 26, 2018 at 11:13 pm #83574
When I was a kid, my dad used a ball point pen to install the new O-ring in those. It’s blunt tip won’t damage the O-ring so easily.October 1, 2018 at 5:22 am #83789
Having read this and other threads, I’m still confused. Want to replace the o rings in some leaky fuel line connectors. Probably also need to replace some valve o rings in the tanks. Can anybody provide a standard number for these? I don’t want to pay several dollars for an o ring that should cost several cents.
The most common o ring sizing standard is AS568, the US Aerospace Size Standard for O-rings ( I think it used to be AN). I would think OMC would have designed around standard sizes. There is a chart of standards sizes here: http://www.applerubber.com/src/pdf/as56 … -rings.pdf
Is it true that the tank valve o rings changed over time? Anybody know those sizes?
Thanks.October 1, 2018 at 11:53 am #83793
Yes, there were two sizes of the tiny o-ring around the pin on the tank outlet (behind the brass retainer washer). As I sort of remember, if the hose connector goes on vertically, it is the early, small version, but if it goes on horizontally, it is the later, larger version. But I could be all wet.
Sorry, I don’t know the sizes.
US Member - 1 Year
Topics: 852October 1, 2018 at 1:25 pm #83797
Note that the NAPA (Sierra) 18-7111 for 301824 is wrong. It is too fatOctober 1, 2018 at 2:51 pm #83805
Well, thanks. Looks like there are three numbers: 334913, 303598, and 331380. Dimensionally they are given as the same, so maybe a material or hardness (durometer) difference? Plus there is the Sierra number 18-7150. These don’t seem to correspond to any standard industrial size, which must be the reason they are expensive, like $2 + /per each?October 3, 2018 at 9:25 pm #83940
I think there is confusion here between the tank valve parts and the connector parts, even though the heading clearly says "Single hose fuel connector…."
In any case, the fuel connector O ring is called a quad ring, which is something with a square section, on Marineengine.
They list two: 307858 for $1, and 322488 for $4. Both are OMC numbers, of course. Anybody know the difference?October 4, 2018 at 12:39 am #83950quote amuller:
What parts list shows quad rings? I guess I’m too old and haven’t seen them in fuel connectors. Not a bad idea though.
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