Qingdao Gofai Rubber company produces various rubber setting blocks for window and door.
It contains: foamed silicone rubber strips/foamed EPDM rubber strips/solid rubber sealing strips for door and window,etc
Shape:round and square/ D /E/W/H, etc.
Material:silicone rubber/nitrile rubber/EPDM/PVC, etc
Please see below picture for more details:
Welcome you provide drawing or samples to do it.