SB-D: Mechanical Seals of the SB-D range are high-speed seals for turbo compressors, screw compressors, gear compressors or rotary piston blowers. The rotating seat is driven by a friction clamp. Good heat transfer and low turbulence losses are endured by guidance of the buffer medium. The product pressure keeps the seal closed if the oil system is switched off on shut down of the compressor.