Roop Polymers Ltd. - Rubber Extrusion Division supplies Extruded Corner Joints. Roop Polymers Ltd. - Rubber Extrusion Division is an ISO/TS 16949: 2002, ISO 14001:1996 awarded company. Roop Polymers Ltd. - Rubber Extrusion Division offers various types of co-extruded profiles, building profiles, corner joint, sponge door rubbers, glazing rubbers, diggy/ boot seals etc. Extruded Corner Joints is designed to provide good thermal insulation. This Extruded Corner Joints offers perfect sealing to joints and avoid needs to fill sealant.