Here's a new Silicon Flywheel Oil Seal for type 1 engines.
Ford Sierra Cosworth Axle Oil Seal Pinion Rear 7" 7.5" Differential
for FORD RANGER PICK UP 16V 2.5TD/3.0TD TRANSFER BOX OIL SEAL FRONT & REAR 2006+
for MAZDA BT50 2.5TD 16V TRANSFER BOX OUTPUT OIL SEAL FRONT & REAR (2006-2012)
FOR NISSAN NAVARA PICK UP D22 2.5TD TRANSFER BOX OUTPUT OIL SEAL FRONT REAR 01+
OEM Land Rover Differential Pinion Oil Seal Front & Rear - FTC5258G
FOR MITSUBISHI PICK UP L200 K74 2.5TD TRANSFER BOX OIL SEAL FRONT & REAR 1996-07