10. Apply a thin film of graphite dispersed in glycerin or water into the experience in the rubber flanges ahead of setting up. No other kind of lubricant or seal needs to be applied over the flange confront. In relation to temperature extremes, metal expansion joints normally take the direct. https://axial-expansion-joint-dia35791.xzblogs.com/79718349/rubber-expansion-joint-for-hvac-can-be-fun-for-anyone