ISO 7308:1987 PDF

Name: ISO 7308:1987 — Road vehicles — Petroleum-based brake-fluid for stored-energy hydraulic brakes
SKU: ISO 7308:1987
Price: 25 EUR
Availability: InStock

Road vehicles — Petroleum-based brake-fluid for stored-energy hydraulic brakes

Название (английский):

ISO 7308:1987

Road vehicles — Petroleum-based brake-fluid for stored-energy hydraulic brakes

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 20
Дата публикации:: 17 декабря 1987 г.
Издание:: ISO IS 7308 edition 1 version 1
ICS:: 43.040.40

Тип поставки:

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Язык документа:

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Срок поставки:4 раб. дн. (перевод)

Цена:300 €

Описание (английский):

The brake-fluid specified is for use in road vehicle brake systems equipped with rubber cups and seals (butadiene-acrylonitrile copolymer or equivalent). It is for use in hydraulic brake systems equipped with a pump; it may also be used in other systems without a pump. Not for use under arctic conditions.

Abstract

Overview

Key Topics

ISO 7308:1987 addresses several essential aspects to guarantee safety, reliability, and compatibility:

Fluid Characteristics: The brake fluid must be green, visually clear, and free from suspended matter or sediment.
Performance Requirements:
- High boiling point to resist vaporization during extreme braking.
- Specific viscosity at both high (100°C) and low (-40°C) temperatures for consistent system response.
- Low water content and controlled hygroscopicity to minimize corrosion and fluid degradation.
- Controlled foaming tendency and stability.
Compatibility and Safety:
- Compatible with polymer-based rubber seals commonly used in hydraulic brake systems.
- Maintains physical and chemical stability without causing rubber degradation or excessive swelling.
- Prevents corrosion in metal brake system components.
Testing and Compliance:
- Detailed testing procedures for boiling point, viscosity, water content, low-temperature operation, compatibility, and simulated service performance.
- Requirements for corrosion resistance, anti-wear properties, and shear stability.

Applications

ISO 7308:1987 provides tangible benefits for manufacturers, suppliers, and vehicle operators:

Automotive Industry: Ensures that petroleum-based brake fluids are compatible with the latest materials in vehicle brake systems, promoting consistent braking performance.
Brake System Manufacturing: Offers standardized criteria for selecting and approving brake fluids during design and production of hydraulic brake systems with stored-energy mechanisms.
Aftermarket and Maintenance: Serves as a reference for workshops and service centers to choose compliant brake fluids for optimal safety, particularly in vehicles using synthetic rubber seals.
Regulatory Compliance: Used globally to establish regulatory frameworks and industry best practices regarding automotive brake fluids, supporting vehicle safety and reliability.

Not for Arctic Use

The standard explicitly excludes use in arctic conditions, emphasizing the importance of selecting fluids tailored to environmental requirements.

Related Standards

ISO 7308:1987 is closely linked to several other international standards for quality assurance and compatibility:

ISO 1817: Rubber, vulcanized - Determination of the effect of liquids
ISO 3104: Petroleum products - Determination of kinematic viscosity
ISO 3405: Petroleum products - Determination of distillation characteristics
ISO 48: Vulcanized rubbers - Hardness determination
ISO 7309: Road vehicles - Hydraulic braking systems - Reference petroleum base fluid
ASTM D 892: Foaming characteristics of lubricating oils
ASTM D 2266: Wear preventive characteristics of lubricating greases
ASTM D 1744: Water in petroleum products (Karl Fischer reagent)

Using these related standards together with ISO 7308:1987 enables comprehensive testing and assessment for brake fluid qualification, ensuring all regulatory, performance, and compatibility requirements are satisfied.

Keywords: ISO 7308:1987, petroleum-based brake fluid, hydraulic brakes, stored-energy systems, road vehicles, brake fluid compatibility, brake system performance, international automotive standards, safety, rubber seal compatibility, viscosity, corrosion resistance, brake fluid testing.

Технические детали

Технический комитет: ISO/TC 22/SC 33 - Vehicle dynamics and chassis components
SKU: ISO 7308:1987

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ISO 7308:1987 PDF

Abstract

Overview

Похожие стандарты

Key Topics

Applications

Not for Arctic Use

Related Standards

Технические детали

BS ISO 18177:2025

Plastics. Test method for estimation of the short chain branching distribution of semicrystalline ethylene 1-…

SIST EN ISO 3104:2024

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Petroleum and related products from natural or synthetic sources - Determination of distillation characterist…

ISO 4885:2026

Ferrous materials — Heat treatments — Vocabulary

ISO 7309:1985

Road vehicles — Hydraulic braking systems — ISO reference petroleum base fluid