BKS-PUClosed Back-up Ring in Polyurethane for static and dynamic applications to protect the primary seal from extrusion phenomena. https://www.pantecnica.it/wp-content/uploads/2019/06/BKS-PU.jpg 800 800 admin /wp-content/uploads/2019/01/Pantecnica_logo.png admin2019-06-28 15:58:392020-10-19 15:38:19BKS-PU