Calder Nuclear


Calder is the only UK Manufacturer of lead wool, which is manufactured on site in Chester using our unique process.

Our high quality lead wool consists of thin strands of lead and is primarily used as caulking to seal joints between lead and steel fittings. Supplied in a range of lead alloy specifications from 0-0.5% antimony to Chemical A, the specification of lead wool is dependent on application. We are happy to offer advice on the product specifications required.