The fire resistant U-type sillicon door and window rubber packing/rubber strip/rubber seal is well used on porthole, A60 fireproof/fire door and window. And the fire retardant U-type sillicon door and window solid glass rubber cushion/seal strip is well known for its excellent sealing effect, extremely strong compressive resilience(good compression rebound) and excellent fire resistance. All of our customers give consistent high praise. Besides, we are able to design and produce different profiles based on your requirements.