PINSU-DOT4 Brake Fluid with Anti-Rust Protection-Hangzhou Jialibang New Materials Co., Ltd.

PINSU-DOT4 Brake Fluid with Anti-Rust Protection

PINSU-DOT4 is a synthetic borate ester type brake fluid specially designed for modern automotive braking systems. It meets and exceeds the GB 12981 HZY4 (DOT4) international standard and is suitable for all types of passenger cars, SUVs, and commercial vehicles. It is especially suitable for ABS anti-lock braking systems and high-load scenarios with frequent braking.

**FEATURES**
- 1、Strong hygroscopicity - effectively absorbs moisture, reducing internal corrosion of the braking system.
- 2、High dry and wet boiling points - Good high-temperature resistance, with a relatively high wet boiling point, reducing the risk of vapor lock.
- 3、Wide compatibility - suitable for most family cars and can be mixed with DOT3 (but it is recommended to replace it completely).
**PACKAGING**
- 500ml 、250ml
-Also available in larger buckets for professional use
**BASIC USES**
-1、Everyday family car - meets the needs of most urban driving and medium load usage.
- 2、Mild performance requirements - such as occasional aggressive driving or mountain driving.
-3、Replace DOT3 - It can be directly upgraded to enhance the high-temperature resistance of the braking system.
**COLOURS**
Colors may be available upon request

Basic Product Information

PINSU Brake Fluid DOT4 Product Data Sheet

Product Model: BF - 4010

Specification Standards: GB 12981 - 2012 HZY4 / FMVSS 116 DOT4 / ISO 4925 Class 4

Core Physicochemical Properties

Detection Item	Technical Parameters	Test Standard
Appearance	Colorless to light yellow transparent liquid	VISUAL
Density (20°C)	1.05 ± 0.01 g/cm³	ISO 3675
Kinematic Viscosity
-40°C	≤1,800 mm²/s (Measured 1,650)	ASTM D445
100°C	≥1.5 mm²/s (Measured 1.8)
Boiling Point		SAE J1703
Dry Boiling Point (ERBP)	≥260°C (Measured 265°C)
Wet Boiling Point (WERBP)	≥160°C (Measured 163°C)	（After aging with 3.5% water content）
pH Value	7.0 - 11.5 (Measured 8.2)	ISO 4316
Water Content	≤0.2% (Factory value)	Karl Fischer

Functional Characteristic Data

Performance Dimension	Test Result	Verification Method
Rubber Compatibility
SBR Rubber Swelling Rate	+0.8% (Standard Limit ±5%)	ISO 4928
EPDM Rubber Hardness Change	-3 IRHD (Standard Limit ±15)
Metal Corrosiveness
Copper Strip Corrosion (100°C/24h)	Grade 1a (No Pitting/Discoloration)	ASTM D130
Cast Iron Weight Loss	≤0.2 mg/cm² (Standard ≤0.4)	ISO 4928
Low - Low-Temperature Fluidity	-50°C No Crystallization/Sedimentation	GB/T 265
Oxidation Resistance	Acid Value Increase after Oxidation ≤0.1 mg KOH/g	SH/T 0085

Compatibility and Safety Data

Item	Description
Compatibility	Miscible with all DOT3/DOT4/DOT4+
Rubber Type Compatibility	EPDM, SBR, FKM seals
Flash Point	≥110°C (PMOC closed - cup method)
Toxicity	Contains borate ester (Avoid contact with skin/eyes)
Disposal Method	Dispose of waste liquid according to the hazardous waste code HW08

Packaging and Storage

Specification	Packaging Material	Shelf Life
500mL/bottle (DOT4-500)	HDPE UV-resistant bottle	5 years
1L/can (DOT4-1000)	Tin-plated iron can	5 years
Storage Conditions	Store in a dry environment at 15 - 25℃ away from light. After opening, it needs to be sealed and used up within 6 months