The popularity of electric pressure cookers has brought up other safety issues besides food safety.
One is about using Pyrex® inside the electric pressure cooker. According to Corelle Brands, makers of Pyrex®, it is not recommended to put this glassware in these appliances. The glass is not made to be put under pressure and it could crack or explode. If you have further questions, contact the Corelle Brands Consumer Care Center at 1-800-999-3436.