styrene-ethylene-butylene-styrene triblock copolymer

polymer

Styrene-ethylene-butylene-styrene (SEBS) is a thermoplastic elastomer triblock copolymer combining rigid polystyrene end blocks with a flexible polyethylene-butylene rubber midblock, delivering elasticity with processability. This material is widely used in consumer goods, medical devices, and automotive applications where flexibility, resilience, and ease of molding are essential—it bridges the gap between rigid plastics and traditional rubbers, allowing injection or extrusion processing without curing steps. Engineers favor SEBS over natural rubber or cross-linked elastomers when low-temperature flexibility, chemical resistance, and cost-effective high-volume production are priorities.

medical device seals and gasketsautomotive vibration dampingfootwear soles and cushioningadhesives and coatingsconsumer product grips and handlesflexible hose and tubing

Compliance & Regulations

?UL 94?ITAR?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Glass Transition Temperature(Tg)	216.7	K	—

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Regulatory Screening

Environmental

Export Control

Safety & Biocompatibility

Quality & Standards

Industry-Specific

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.