Which term is synonymous with 'sealant' in both German and English?

The term 'Dichtmasse' is synonymous with 'sealant' in both German and English because it directly translates to a material used to block the passage of fluids through surfaces or joints. Sealants are typically used in construction, automotive, and various other industries to prevent leaks and ensure airtight seals. 'Dichtmasse' specifically refers to substances that provide sealing properties, which is why this choice accurately reflects the meaning of 'sealant.' The other options like 'Schäkel' (which refers to a shackle), 'Passcheibe' (which denotes a washer used to spread load), and 'Skizze' (which means sketch) do not convey any sealing properties and are unrelated to the concept of sealants. Thus, 'Dichtmasse' is the appropriate term that aligns with the definition and purpose of a sealant.