UHMWPE is often described as the world’s toughest polymer.  UHMWPE is characterised by toughness, chemical resistance, its low coefficient of friction, near-zero moisture absorption and ease of machining. 
Relative to other solid thermoplastics it is rather light weight and will float in water. 
Above all, UHMW machined parts is self-lubricating and offers the highest impact and abrasion resistance of any thermoplastic.

UHMW machined parts have extremely high resistance to wear and abrasion.  It has the highest impact strength of any thermoplastic and is highly resistant to most corrosive materials.  UHMW is self-lubricating and performs well in extraordinarily low temperatures, but begins to soften in higher temperatures.  Unlike nylon, it has a very low moisture absorption rate, making it suitable for use in wet environments.