Standard No.:	QC/T 638-2023
English Name:	Sealing washer
Chinese Name:	密封垫圈
Chinese Classification:	T31    Fasteners
Professional Classification:	QC    Professional Standard - Automobile
ICS Classification:	43.040.40 43.040.40    Braking systems 43.040.40
Source Content Issued by:	MIIT
Issued on:	2023-12-29
Implemented on:	2024-7-1
Status:	valid
Superseding:	QC/T 638-2000 Gasket
Target Language:	English
File Format:	PDF
Word Count:	8000 words
Translation Price(USD):	240.0
Delivery:	via email in 1 business day

QC/T 638-2023 Sealing washer 1 Scope This document specifies the types, dimensions, technical requirements, and product coding regarding sealing washers. This document is applicable to the sealing between parts in oil-based piping systems on automobiles. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 90.1 Fasteners - Acceptance inspection GB/T 90.2 Fasteners - Marking and packaging GB/T 2040 Copper and copper alloy sheet GB/T 3880.1 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 1: Technical conditions of delivery GB/T 30512 Requirements for prohibited substances on automobiles QB/T 2200 Mild steel paperboard QC/T 326 Coding rules for automotive standardized parts QC/T 625 Metallic coatings and conversion coatings for automobile 3 Terms and definitions No terms or definitions are listed in this document. 4 Types and dimensions The types and dimensions of sealing washers are specified in Figure 1 and Table 1.

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Types and dimensions 5 Technical requirements 6 Product coding