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Please note: All cut material is non-returnable unless faulty as these are non-sellable and have been cut to specific requirements.

Neoprene / Nitrile Bonded Cork Transformer Grade IS-4253 PART II 1988

SKU: Coru353/1120
  • Chemical Resistant (Call us to confirm suitability)
  • Oil / Fuel Resistant (Call us to confirm suitability)
  • Highly durable & resilient
  • high resilience, flexibility and compression characteristics

From £20.00 Excl. VAT
From £24.00 Incl. VAT

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This product is available for bespoke manufacturing, please choose an option below:

Coru353 is a Nitrile / Neoprene Rubber bonded TRANSFORMER GRADE Cork jointing sheet is a high industrial grade for arduous applications such as transformer, automotive and industrial gaskets. Excellent resistance to transformer oils and fuels coupled with high resilience, flexibility and compression characteristics.

N.B. Available in plain or self-adhesive backed tape (SAB) alternatives. Bespoke sheets and gaskets are available, as well as customised rubber strips. Email your enquiries to sales@coruba.co.uk.

TRANSFORMER GRADE PER IS-4253 PART II 1988

  • General Purpose
  • High Temperature (See Data)
  • Weather / Ozone
  • Low maintenance
Properties Test Method Unit Values
Hardness ASTM D2240 Shore A 60 -80
Density (Min) ASTM F 1315 Kg/M3 700
Tensile Strength Min: ASTM F 152 Mpa 1.72
Compressibility at 400 psi (min) ASTM F 36 % 25 -35
Recovery at 400 psi ( min) ASTM F 36 % 75
Flexibility ASTM F1 47
Original (F = 5) No Cracks No Cracks
Oven aged, 70h @100oC (F = 16) No Cracks
ASTM No1 Oil 70hr @ 100oC (F 16)
Volume change after immersion ASTM F 146
ASTM No1 Oil 70hr @ 100oC % -10 to +10
IRM 903 Oil 70hr @ 100oC % 0 to +20
 Fuel A, 22Hr @ RT % 0 to +15
Compression Set , Method A,  22h 70oC ( Max) % 40
Rubber Binder Neoprene/Nitrile
Cork Granular Size mm 0.5- 1
Colour: BLACK
Properties Test Method Unit Values
Hardness ASTM D2240 Shore A 60 -80
Density (Min) ASTM F 1315 Kg/M3 700
Tensile Strength Min: ASTM F 152 Mpa 1.72
Compressibility at 400 psi (min) ASTM F 36 % 25 -35
Recovery at 400 psi ( min) ASTM F 36 % 75
Flexibility ASTM F1 47
Original (F = 5) No Cracks No Cracks
Oven aged, 70h @100oC (F = 16) No Cracks
ASTM No1 Oil 70hr @ 100oC (F 16)
Volume change after immersion ASTM F 146
ASTM No1 Oil 70hr @ 100oC % -10 to +10
IRM 903 Oil 70hr @ 100oC % 0 to +20
 Fuel A, 22Hr @ RT % 0 to +15
Compression Set , Method A,  22h 70oC ( Max) % 40
Rubber Binder Neoprene/Nitrile
Cork Granular Size mm 0.5- 1
Colour: BLACK
Rubber Gaskets Quote Request
Cut Rubber Strips Quote Request
Cut Rubber Parts Quote Request