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ISO 4929:1978 PDF — Road vehicles — Diaphragm gaskets for hydraulic brake master cylinder… — GOST Standards

//ISO 4929:1978

ISO 4929:1978

Name: ISO 4929:1978 — Road vehicles — Diaphragm gaskets for hydraulic brake master cylinder reservoirs using a non-petroleum base hydraulic brake fluid
SKU: ISO 4929:1978
Price: 25 EUR
Availability: InStock

Road vehicles — Diaphragm gaskets for hydraulic brake master cylinder reservoirs using a non-petroleum base hydraulic brake fluid

Название (английский):

ISO 4929:1978

Road vehicles — Diaphragm gaskets for hydraulic brake master cylinder reservoirs using a non-petroleum base hydraulic brake fluid

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 4
Дата публикации:: 1 февраля 1978 г.
Издание:: ISO IS 4929 edition 1 version 1
ICS:: 43.040.40

Тип поставки:

Full version25 €Ask AI2 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:1 рабочий день

Цена:25 €

Описание (английский):

Specifies performance requirements and test methods for diaphragm gaskets of master cylinder reservoirs to be used on road vehicles. These gaskets provide a seal and protection against water and contamination from external sources. Contains classification of tests, physical requirements, and test procedures.

Abstract

Overview

Key Topics

Scope and Applicability: Applies to diaphragm gaskets fabricated from rubber elastomer or elastomer composites that act as a moisture barrier and are suitable for contact with non-petroleum brake fluids complying with ISO 4925.
General Requirements:
- Material composition suitable for non-petroleum brake fluids.
- Workmanship free from visible defects, with precise conformity to drawings.
- Mandatory marking of manufacturer ID and relevant standard markings, such as "ISO 4929".
Testing and Classification:
- Qualification Tests: All-encompassing performance validation for new or modified gaskets.
- Lot Acceptance Tests: Batch-level checks to ensure ongoing production quality.
- Sampling: Sampling procedures to be agreed upon between manufacturer and purchaser.
Physical Requirements:
- Rubber Hardness: Specified range for hardness, with methods for both initial qualification and batch acceptance.
- Heat and Cold Resistance: Tests for performance at elevated temperatures (including accelerated aging and fluid resistance) and flexibility at low temperatures.
- Ozone Resistance: Requirements to ensure durability against ozone-induced cracks.
- Seal Integrity: Compliance testing for prevention of fluid leakage under dynamic conditions.

Applications

ISO 4929:1978 is crucial for:

Automotive Manufacturers and Suppliers: Helps specify, design, and test diaphragm gaskets to assure compatibility with modern non-petroleum brake fluids and prevent premature seal failure.
Brake System Designers: Enables the selection of gasket materials and designs that will provide long-term integrity in demanding automotive environments.
Quality Assurance and Procurement: Supports procurement teams in specifying appropriate gasket products, ensuring consistent quality through standardized test methods and acceptance criteria.
Regulatory and Testing Laboratories: Provides a basis for type approval, compliance verification, and performance benchmarking of brake system components.

Using this standard ensures that diaphragm gaskets provide reliable sealing and protection, reducing the risk of brake system failures due to fluid contamination or leakage.

Related Standards

For comprehensive implementation and testing, the following standards are referenced in ISO 4929:1978:

ISO 48: Vulcanized rubbers - Determination of hardness
ISO 1431: Vulcanized rubbers - Determination of resistance to ozone cracking under static conditions
ISO 1817: Rubber, vulcanized - Resistance to liquids - Methods of test
ISO 188: Rubber, vulcanized - Accelerated ageing or heat resistance tests
ISO 4925: Road vehicles - Non-petroleum base hydraulic brake fluid
ISO 4926: Road vehicles - Hydraulic brake systems - Non-petroleum base reference fluids
ISO 4928: Road vehicles - Elastomeric cups and seals for hydraulic brake actuating cylinders using a non-petroleum base hydraulic brake fluid

These related standards provide additional test methods, material specifications, and performance criteria to support the robust evaluation of diaphragm gaskets for hydraulic brake systems in road vehicles.

By following ISO 4929:1978, manufacturers and end users ensure high performance, safety, and longevity of braking system components in all vehicles utilizing non-petroleum based hydraulic brake fluids.

Технические детали

Технический комитет: ISO/TC 22/SC 33 - Vehicle dynamics and chassis components
SKU: ISO 4929:1978

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PDF

ISO 4929:1978

Abstract

Overview

Похожие стандарты

Key Topics

Applications

Related Standards

Технические детали

ISO 4925:2005

Road vehicles — Specification of non-petroleum-base brake fluids for hydraulic systems

ISO 4850:1979

Personal eye-protectors for welding and related techniques — Filters — Utilisation and transmittance requirem…

ISO 14315:1997

Industrial wire screens — Technical requirements and testing

ISO 18172-2:2007

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ISO 18825-1:2016

Clothing — Digital fittings — Part 1: Vocabulary and terminology used for the virtual human body

ISO 4926:2006

Road vehicles — Hydraulic braking systems — Non-petroleum-base reference fluids

ISO 4928:2006

Road vehicles — Elastomeric cups and seals for cylinders for hydraulic braking systems using a non-petroleum…