Standard No.:	QC/T 643-2000
English Name:	Vehicle- Test method of contact stain- Sealing strips
Chinese Name:	车辆用密封条的污染性试验方法
Professional Classification:	QC    Professional Standard - Automobile
Issued on:	1990-07-21
Implemented on:	1991-5-1
Status:	valid
Superseding:	GB/T 12426-1990 车辆用密封条的污染性试验方法
Target Language:	English
File Format:	PDF
Word Count:	2000 words
Translation Price(USD):	164.0
Delivery:	via email in 1 business day

1 Subject content and application scope This standard specifies the test method for the contact stain of vulcanized rubber or plastic samples on white test plates after exposure in a climate tester for a certain period of time. This standard is applicable to the contact stain test of rubber and plastic sealing strips for vehicle doors and windows. 2 Method principle Observe the degree of contact stain on the surface of a white test plate when a rubber or plastic specimen contacts the surface of the test plate. 3 Instruments and apparatus 3.1 Thermostat: 80±2℃. 3.2 Climate tester. 3.3 White test plate: Grade I white ceramic tile: 150mm×150mm. 3.4 Load weight: 4.41N (0.45kg).

1 Subject content and application scope 2 Method principle 3 Instruments and apparatus 4 Materials 5 Sample 6 Test methods 7 Evaluation of test result Additional explanation