PRODUCT INFORMATION

TECHNICAL DATASHEET

15/10/2002-3

INTRODUCTION

Hyperlast 2851061 is a polyether based compound that reacts 

at room temperature with Hyperlast 5000 Isocyanate to produce 

a polyurethane elastomer suitable for use as a sealant in the 

manufacture of absolute air filters.

Hyperlast Limited

Station Road, Birch Vale

HIGH PEAK, SK22 1BR

United Kingdom

Tel 01663 746518

Fax 01663 746605

www.hyperlast.com

HYPERLAST 

2851061

COMPONENT PROPERTIES

Polyol Component :-

Product Reference 2851061

Appearance Cream Liquid at 25 °C

Viscosity 3500 - 4500 cps at 25 °C

Specific Gravity 1.48 - 1.52 at 25 °C

Isocyanate Component :-

Product Code 2875000

Appearance Brown Liquid at 25 °C

Viscosity 180 - 240 cps at 25 °C

Specific Gravity 1.23 - 1.25 at 25 °C

Mixed System :-

Mixing Ratio 10 :1 by weight (Polyol : Isocyanate)

Gel Time 8' 0" - 10' 0" (100 gms at 25 °C)

CURED SYSTEM - TYPICAL PROPERTIES

Property Test Method Value Unit

Shore Hardness BS 2782 Meth 365B 50 °A

Tensile Strength BS 903 Pt A2 1.8 MPa

Elongation at Break BS 903 Pt A2 180 %

Angle Tear Strength BS 903 Pt A3 5 N/mm
PROCESSING DETAILS

The following information is given as a guide to processing this product. It is recommended optimum 

conditions for a specific application are determined experimentally. Hyperlast Limited Technical Service 

Department can offer more detailed advice.

Recommended Processing Temperatures :-

Polyol Component

Isocyanate Component

20 - 30 °C

20 - 30 °C

Recommended Cure Cycle :-

Cures at ambient temperature.

Additional Processing Details :-

When casting into metal containers the use of a primer may be necessary.

STORAGE AND HANDLING

Polyol Component :-

Store in tightly sealed containers at a temperature of 0 - 30 °C. Raise to the processing temperature and 

mix well before use. Avoid contact with moisture.

Shelf Life - 6 months.

Isocyanate Component :-

Store in tightly sealed containers at a temperature of 5 - 30 °C. Avoid contact with moisture.

Shelf Life - 12 months.

Storage below the recommended minimum temperature may result in freezing of the Isocyanate. If the 

Isocyanate does not fully melt out when raised to the processing temperature it may be necessary to 

re-melt at a temperature of 60 - 70 °C following the procedures laid down in the Hyperlast Limited 

information sheet 'ISOCYANATES - HAZARDS AND SAFE HANDLING PROCEDURES'.

More detailed information on the Storage and handling of Polyurethane Components can be obtained by 

contacting Hyperlast Limited Technical Service Department.

MATERIAL SAFETY INFORMATION

Before using this product consult Hyperlast Limited Safety Data Sheets.

PACKAGING

2851061 is available in :- 25 Kgs, 250 Kgs

2875000 is available in :- 25 Kgs, 250 Kgs

Dow Hyperlast Limited have a policy of continual improvement so please ensure you are in possession of the latest issue of the Product Information sheet for the product (s) you 

are planning to use. Although every effort has been made to ensure the accuracy of the information contained herein , Dow Hyperlast Limited gives no warranty that the 

information is accurate and shall in no circumstances be liable to any person if it is not . The customer must satisfy himself as to the suitability of any of Dow Hyperlast Limited 's 

products for his requirements.

'Autothane', 'Diolplex', 'Diorez', 'Diprane', 'Durelast', 'Hyperlast' ‘Hyperkote, Rotekote, Monothant and 'Solidair' are all trade marks, the property of Dow Hyperlast Limited.