Full definition
Pricing method used for rubber and polymeric materials sold in bulk, non-standard sheet form or as raw compound. Total price = weight (kg) × unit price/kg. Common for SBR/EPDM/NBR compound rubber, neoprene sheet rolls and raw rubber stock. Buyers must consider material density (e.g., neoprene ≈ 1.23 g/cm³) to correctly estimate cost per square metre or piece from a per-kilogram quote.