RBF700 is a 100% synthetic racing brake fluid from Motul which meets DOT 4 specifications. It features a very high boiling point which makes it suitable for use in the most extreme racing conditions including heavy and powerful race cars using Carbon or Ceramic brakes.
Boiling point - 336 Deg C (637 Deg F)
High-Performance brake fluid with a very high dry boiling point of 637°F (336°C) and wet boiling point of 401°F (205°C). For all types of hydraulic brake and clutch actuators requiring non-silicone synthetic fluid. Specially designed to resist extreme high temperature generated by racing brakes (carbon and ceramic) only allowing a minimal air entrance for brake cooling.
Seiken Racing Brake Fluid BFR100 | 1L
The long-awaited glycol-based brake fluid.
Seiken genuine brake fluid is a high-quality, high-performance non-mineral oil brake fluid that complies with the JIS standard (except BFR), as well as meeting standards such as FMVSS and ISO. With boiling point performance exceeding JIS standard values, we prevent the phenomenon of vapor lock and protect car safety.
Two major differences between glycol-based and silicone-based
● Glycol dissolves water. Silicone does not dissolve water. Brake fluid should not dissolve water, but this is the first fatal drawback.Water droplets are generated in the air chamber of the reservoir tank of the master cylinder due to the temperature difference.Water droplets get mixed in the brake fluid.In the case of silicone-based brake fluid, water (specific density 1) has higher specific gravity than silicone (specific density 0.958), does not dissolve, and sinks to the lower part as water.Water infiltrates into the brake pipe, brake hose, caliper, and wheel cylinder, and the water reaches the high heat generation part.In other words, even silicon-based brake fluid, which has a high boiling point, causes vapor lock at a temperature of only 100 ° C (boiling point of water).Glycol brake fluid is hygroscopic.Since water dissolves in brake fluid, it retains a high boiling point compared to silicone-based products, and the rusting rate is incomparably lower than that of silicone-based products even in the presence of water.
● Matching with rubber (compatibility) The rubber material for brake parts is SBR (styrene-butadiene-based rubber).Silicone-based brake fluid has very poor compatibility with rubber and has the property of hardening and shrinking rubber, and this phenomenon progresses remarkably at higher temperatures, and finally, a cracking phenomenon (cracking) occurs. However, it leads to the destruction of rubber parts.In other words, as soon as the curing phenomenon begins, liquid leaks and immediately becomes a no-brake phenomenon.This is another fatal drawback.Glycol-based brake fluid is extremely compatible with SBR and has excellent properties that give proper swelling to the rubber cup and maintain good compatibility with the cylinder.Piston seals and rubber cups are very delicate "creatures".In order to obtain the ideal matching degree and achieve perfect sealing performance in a better environment, it is best to use SEIKEN brake fluid and SEIKEN brake parts that know the brakes together.More than half of all vehicles running in Japan are equipped with SEIKEN brake parts.
Dry boiling point 315 ℃ Capacity 1L
* Do not mix with mineral oil or silicone brake fluid. It is flammable, so keep it away from fire.
A high-temperature brake fluid with an extremely high dry boiling point of at least 310°C, providing exceptional resistance to vapor locking and good compressibility for improved brake feel.
Brake fluids play a key role in driver experience and vehicle feedback. The Millers Oils motorsport brake fluids maintain their viscosity even at high temperatures and are robust against water absorption to ensure consistent performance.
Use as received for racing and high-performance braking systems where a non-mineral fluid is required and high braking temperatures are experienced. Extended performance DOT 4 formulation suitable for high-performance road cars, track day, and competition use.
Dry boiling point of above 310°C in comparison to the 230°C required for standard DOT 4 fluids
Has the capability to perform at the high braking temperatures found under arduous racing conditions
Robust against water absorption, improving resistance to vapour lock
Compatible with DOT 3 & 5.1 brake fluids
Equilibrium Reflux Boiling Point: Above 310°C
Wet Equilibrium Boiling Point: Above 194°C
FMVSS 116: DOT 4
SAE Viscosity Grade: J1703, J1704
Dream Automotive offers in-house fitting on all products at our workshop in Luton, Bedfordshire.