Full definition
A versatile elastomer class offering the highest mechanical properties among all rubbers: exceptional abrasion resistance (3-10x natural rubber), highest tensile strength (30-70 MPa), outstanding tear resistance, excellent load-bearing capacity, and very high cut resistance. Available from very soft (15 Shore A) to very hard (75 Shore D), spanning the range from rubber to rigid plastic. Two chemical types: polyester-based (AU — higher abrasion and oil resistance) and polyether-based (EU — better hydrolysis and microbial resistance). Temperature range: -30 to +80°C continuous (main limitation — degrades rapidly above 80-90°C). ASTM D2000 classification: BG. Applications: conveyor belt scrapers (best wear life), industrial wheels and rollers (highest load capacity), hydraulic seals and wipers, screen panels for mining, pipeline pigs, vibration isolation pads, and protective coatings. Processing: cast (liquid systems, standard for large parts), injection molded (thermoplastic TPU, for high-volume production). Limitations: poor heat resistance, attacked by hot water/steam, degrades under UV. Brands: BASF (Elastollan), Covestro (Vulkollan, Desmopan), Huntsman.