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Item Code: SM123

Black Commercial Premium Grade NR / SBR 70° shore

SM123 Black Commercial Premium Grade NR / SBR 70° shore is a Commercial Premium Grade Natural Rubber and Styrene Butadiene rubber blend. It is used where a cheaper quality material will suit. For example in simple applications such as packing pieces, dust seals, protection pads etc. where the material is not coming under duress.

N.B. Metroseal Sheeting can be supplied plain or with self adhesive backed tape (SAB). Rubber Strip to bespoke sizes are available along with customised sheets/gaskets. Please email your enquiry details to sales@metroseal.co.uk

  • Material Profile: See below
  • Thickness: 0.5mm to 50mm
  • Sheet Size: 1.4m wide in 5, 10 and 20m rolls
  • 50mm in moulded plates 1m x 2m
  • Finish: Smooth (SS), Cloth (CC) Smooth / Plate (SC)
  • Cutting: Standard press-tools

This Product is REACH, RoHS, PAH and CE Compliant

Other grades, colours and finishes are available – subject to minimum batch quantities

PROPERTIES

TEST METHOD

VALUES FPS UNITS

TEST METHOD

VALUES METRIC UNITS

SPECIFIC GRAVITY

DIN 53508

1.50±0.05

ASTM D297

1.50±0.05

HARDNESS

DIN 53505

70 ± 5 SH A

ASTM D2240

70 ± 5 SH A

TENSILE STRENGTH ( MIN )

DIN 53504

426 PSI

ASTM D412

30 KG/CM2

ELONGATION AT BREAK ( MIN )

DIN 53504

200%

ASTM D412

200%

TEAR RESISTANCE ( ANGULAR ) MIN

DIN 53515

90 LBS/INCH

ASTM D624

16 KG/CM

CHANGE IN PROPERTIES AFTER

 

 

 

 

HEAT AGEING FOR ( 72 HRS. AT 70 ºC )

 

 

ASTM D573

 

— HARDNESS (PTS)

 

+ 5 (MAX)

 

+ 5 (MAX)

— TENSILE STRENGTH (%)

 

+ 10 / -25

 

+ 10 / -25

— ELONGATION AT BREAK (%)

 

+ 10 / -25

 

+ 10 / -25

VOLUME SWELL : AT 70ºC FOR 72 HRS

 

 

ASTM D 471

 

IN IRM OIL NO.1

 

NOT RECOMMENDED

 

NOT RECOMMENDED

IN IRM OIL NO.2

 

NOT RECOMMENDED

 

NOT RECOMMENDED

IN IRM OIL NO.3

 

NOT RECOMMENDED

 

NOT RECOMMENDED

CHEMICAL RESISTANCE

 

 

 

 

— OZONE

 

NOT RECOMMENDED

ASTM D 1149

NOT RECOMMENDED

— DILUTE ACIDS AND BASES

 

NOT RECOMMENDED

 

NOT RECOMMENDED

— CONCENTRATED ACIDS AND BASES

 

NOT RECOMMENDED

 

NOT RECOMMENDED

— OILS

 

NOT RECOMMENDED

 

NOT RECOMMENDED

— SOLVENTS

 

NOT RECOMMENDED

 

NOT RECOMMENDED

TEMPERATURE RANGE

 

-20º TO + 70 ºC

 

-20º TO + 70 ºC

COLOUR

 

BLACK

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