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Old 06-02-2017, 04:30 PM   #1
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1980's bronze pipe deck fill plates

I have a 1981 Defever 48 with bronze deck fill plates. The O-rings are well worn and due for replacement. Unfortunately the o-rings are very fine in material diameter; typical Perko or automotive o-rings are too "fat".

The fresh water deck plate o-rings are 1-3/4" diameter.
The diesel deck plate o-rings are 2" diameter.

Does anyone know of a replacement source? I don't know who manufactured the deck plates. They are bronze with cast "Water" and "Diesel" markings.
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Old 06-02-2017, 04:37 PM   #2
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Greetings,
Welcome aboard eh? An auto parts store usually has an assortment of o-rings on hand. Are these actually o-rings or are they round gaskets? Meaning in cross section are they circular or square/rectangular?

NAPA?
Lordco?
Canadian Tire?

https://www.yellowpages.ca/search/si...pbell+River+BC

Possibly a hydraulics shop?

https://www.yellowpages.ca/search/si...l%20River%20BC
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Old 06-02-2017, 04:58 PM   #3
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Even if you put a slightly larger cross section O ring, it will probably seal if it seats in the cap.
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Old 06-02-2017, 05:24 PM   #4
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Thanks!

Now that you mention it, they did seem more rectangular in cross-section (round gaskets). I just assumed that they had squished over time.....

I stretched the 1 1/2" Perko o-rings around the 1 3/4" cap; the cap seems to seal but does not screw flush to the deck. The cap sits proud.

Next week I will check with the local hydraulics shop (old gasket/o-ring in hand)
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Old 06-02-2017, 05:31 PM   #5
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Those orings are usually 1/16" thickness. If the OD (outside diameter) is 1 3/4", then the oring is #030. If the oring ID is 1 3/4", then it's a #031.

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Old 06-02-2017, 09:29 PM   #6
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Jeez Ted, you just know that stuff?
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Old 06-05-2017, 11:52 PM   #7
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#031 and #032 seemed to do the trick. Thanks. Fortunately I have a wide selection of industrial shops and boating stores near the marina!
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