Shop for Surlyn® sheets. Surlyn® is a soft, clear plastic that is tough and durable with excellent thermoforming characteristics. It is commonly used in the orthotics and prosthetics industry for evaluation interfaces (check sockets), spinal and upper limb orthoses, burn masks, and helmets. Custom cuts available. Stocked materials typically ship in 2-5 business days. Can’t find what you need? Get a quote.