IS – specification for Block Rubber

Parameters	ISNR 5	ISNR 10	ISNR 20
Dirt content (% by mass, maximum)	0.05	0.1	0.2
Volatile matter (% by mass, maximum)	0.8	0.8	0.8
Ash content(% by mass, maximum)	0.6	0.75	1
Nitrogen content(% by mass, maximum)	0.6	0.6	0.6
Initial plasticity (minimum) Po	30	30	30
Plasticity Retention Index (PRI, minimum)	60	50	40

ISNR – Indian Standard Natural Rubber

Packing : Blocks of 25/35 Kg each, wrapped in LDPE Sheets.

Shipment : 840 x 25 Kg blocks (21 tonnes) per 20 ft container (loose stacked)

Palletisation : Shipment can also be made on pallets (made of timber, generally rubber wood, treated for strength and durability) at extra cost.

Shrink-wrap : Also can be made available at extra cost.

TSR Grades.

ISNR 5

ISNR 10

ISNR 20

RSS – Ribbed Smoked Sheet
RSS –1	RSS –2	RSS –3
RSS –4	RSS –5

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