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Volvo D1 30 Heat Exchanger O rings |
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SurfinSurgeon 
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Joined: 04 August 2025 Location: San Diego, CA Status: Offline Points: 41 |
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 Topic: Volvo D1 30 Heat Exchanger O ringsPosted: 29 November 2025 at 15:45 |
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Curious if anyone know source (preferably US or North American) or exact measurements of O rings on the heat exchanger for the D1 30 heat exchanger.
Thanks.
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Tom N
S/v Take Five Hanse 345 |
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SurfinSurgeon
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Joined: 04 August 2025 Location: San Diego, CA Status: Offline Points: 41 |
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Posted: 30 November 2025 at 23:28 |
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Buying from Volvo looks like $30 per O ring.
Measurement is 63mm (ID) x 3.5mm. On Amazon you can buy 5 for $7.
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Tom N
S/v Take Five Hanse 345 |
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marsella
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Joined: 21 June 2022 Location: Antigua Jolly H Status: Offline Points: 592 |
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Posted: 01 December 2025 at 01:00 |
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I would personally go for OEM, not all rubber is the same, and those O rings should last for a long time. I woudnt want to see antifreeze leaking out from the faulty connection or any other failure when I am motoring in the middle of nowhere
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SurfinSurgeon
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Joined: 04 August 2025 Location: San Diego, CA Status: Offline Points: 41 |
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Posted: 01 December 2025 at 14:38 |
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Good point.
Sourcing Volvo parts here in San Diego has been way more difficult than I would have ever thought. Original parts have failed at 100 hours of engine time - so Volvo isn't on the top of my reliability list. The O rings I replaced don't interface with coolant - they are for the end caps - raw water in and out. Looking online the type of rubber I believe is the same. They are easy enough to replace. And cheap enough to carry lots of spares
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Tom N
S/v Take Five Hanse 345 |
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redlion
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Joined: 28 August 2013 Location: Creran Scotlan Status: Offline Points: 216 |
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Posted: 02 December 2025 at 10:02 |
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https://simplybearings.co.uk is where I buy all seals and o rings etc but with all the tariff palava going on just now it is probably not an option. Most likely there is a US equivalent.
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