� Coffee Capsule Lid Specifications 1 Material * Food Grade Aluminum * Sometimes Aluminum + Heat Seal Coating * Safe for use with hot coffee 2 Thickness * Common: 30 – 40 microns * Best for manual sealing: 35 microns (Excellent balance between strength and ease of sealing) 3 Diameter (Size) Depends on the capsule type: * Nespresso: Common diameter 37 mm * Dolce Gusto: Larger diameter (approx. 54 mm) * Custom capsules: Precisely measured according to the mold