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ISNR 20 (TSR-20)

Product Description

ISNR 20 (TSR 20) is general purpose Rubber graded by precise technical standards and not by visual characteristics. Some standards may vary marginally based on the origin. Technically Specified Rubber (TSR) is used for making tyres, tubes, rubber mats, cushion gum stock, raincoat proofings, micro-cellular sheet for upholstery and packing, conveyor belts, foot wear and various other rubber products.

TSR-20 has excellent processing characteristics and good physical properties. Its low viscosity and easier mixing characteristic(compared with the RSS grades) will reduce the mastication and mixing period considerably.

Thomson Rubbers offers ISNR20 (TSR20) rubber with following specifications:

SPECIFICATIONS

SL.NO	CHARACTERISTICS
1	DIRT CONTENT,%BYMASS, MAX	0.2
2	VOLATILE MATTER % BY MASS, MAX	0.8
3	ASH CONTENT % BY MASS,MAX	1.0
4	NITROGEN ,% BY MASS ,MAX	0.6
5	INITIAL PLASTICITY ,P O ,MIN	30
6	PLASTICITY RETENTION INDEX ,PRI, MIN	40

General Info:

Before the early 1960's rubber was produced in 3 forms - ECB, PLC & Sheet. The actual properties and grade of these were determined visually and was prone to human error. Later, the rubber industry started producing rubber with exactly known properties and specifications. Thus Technically Specified Rubber (TSR) grading system was established. I n India , it is called Indian Standard Natural Rubber (ISNR). ISNR (TSR) specification includes 7 grades: ISNR 3CV, ISNR 3L, ISNR 5, ISNR 10, ISNR 15, ISNR 20 (TSR 20) and ISNR 50

* ISNR: Indian Standard Natural Rubber
* TSR: Technically Specified Rubber
* ISNR-20 (TSR20) - Mostly manufactured from shell scrap, tree lace and cup lumps.

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