HerbertFriedman
Member III
Looking for the O-ring size for the waste pump out cap on my 87 E34. It looks to be 1/16 inch thick and about one inch in diameter. It is the same one used on the water tank fill caps and probably the diesel cap too.
I have that fill style on my '89 E32. It should be 1.5” - it is a standard deck fill. I bought some from Defender at a remarkably high price. Next time I'll try Marine Depot Direct at $0.89. The pictures on Defender and MDD are the "deck key" style, but the diameter is the same.Older thread, but I figure I'll ask here as well as the other more recent O-Ring thread. Our Olson 911 has the winch handle style deck diesel fill. Does anyone know what size o-ring that fitting needs? I forgot to measure the cap before I left the boat last time. Looks like this:
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Thanks Jerry. I figured it was a a standard size but then once I started looking for o-rings I got more diameter options than I expected. And yes, paying $5+ for an o-ring is nuts.I have that fill style on my '89 E32. It should be 1.5” - it is a standard deck fill. I bought some from Defender at a remarkably high price. Next time I'll try Marine Depot Direct at $0.89. The pictures on Defender and MDD are the "deck key" style, but the diameter is the same.
Thank you, Jerry!I found that the size #920 o-ring fits perfectly. I paid $12.99 for 50 of them on Amazon.
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