Sikaflex®-291 LOT is a 1-component, all purpose marine grade polyurethane elastomeric adhesive, sealant and bedding compound. It is a moisture cured, non-sag system designed with a long open time (LOT) for jobs that require more time. Provides a waterproof seal, excellent adhesion, and has a medium viscosity that will allow for horizontal or overhead applications without sag. Used above and below water the line, it resists salt water, is sandable, paintable, and is permanently elastic. Sikaflex®-291 LOT replaces Sikaflex®240. *MSDS available on request.