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Posted by Joe Brix on September 28, 2005 at 08:55:04:
In Reply to: Re: Oil boilers: elasomer seals or rigid push metal nipples? posted by stan on September 28, 2005 at 08:01:27:
Not the oil, the boiler water inside the section jacket would come in contact with the O-rings. Some boiler cleaners are very strong. Also there are additives for the glycol anti-free mixes. If you're just using plain water in the boiler, I don't see any issues with the Weil. I feel that push nipples require very high machining tolerances on the passage ways and the nipples to make sure then get pressed exactly into place. They must fit exactly right to prevent leaks. Here's where I'd rather use a Buderus or the New Burrham MPO boiler because of their high grade of cast iron. An O-ring helps seal between any slight irregularities between sections and allows for more flexing as temps change.