Rubber

Rubber is an extremely versatile material with excellent sealing capabilities, however it is important to note that rubber can vary greatly in terms of performance and quality. With this in mind W.C. Munsch only supply rubber from reputable European suppliers thus ensuring that our qualities are of a high standard.

In addition to our commercial rubber range we carry a number of British Standard and other specification rubbers  such as NCB158, ICI M228 etc.

Specification Rubber is made to exacting standards as outlined in BS1154, BS2751, BS2752, BS5400, BS921 etc. For detailed information on specifications please phone us, or click here to see the British Standards web site.

It is important to ensure that the correct material is used for the application. i.e. Although Nitrile is a rubber with very good properties when used in an oil environment, commercial Nitrile would fail quickly when used with Aviation fuel. In this example our supplier manufactures 24 different Nitrile compounds of which only 8 are suitable. Simply call us and we will be happy to quote for any specific application.

The table below can be used as a guide to identify the most suitable rubber for each application but please call us to ensure specific criteria is met.

    Butyl EPDM Hypalon® Natural Neoprene®
Physical Properties Resilience F G G VG G
Compression Set F F F G G
Impermeability to Gases VG G VG F G
Mechanical Properties Impact Resistance G G G VG G
Abrasion G G G VG G/VG
Tear G F F VG G
Chemical Resistance Weather VG VG VG F G
Ozone G VG VG U G
Dilute Acid VG VG VG G F
Dilute Alkali VG G VG F F
Lubricating Oils P P F U F
Petrol (65 Octane) P P P U P
Degreasing Solvents P P P U P
Polar Organic Solvents G G F F P
Hydraulic Oil (Silicone) F F G P G
Hydraulic Oil (Phosphate Esters) G G F U U
Working Temperature Minimum °C -25 -40 -35 -40 -30
Maximum °C 120 140 125 70 110

 

    Nitrile Polyurethane Silicone Viton®
Physical Properties Resilience G G P F
Compression Set G G G G
Impermeability to Gases G G P VG
Mechanical Properties Impact Resistance F G F G
Abrasion G VG F G
Tear G VG P F
Chemical Resistance Weather F VG VG VG
Ozone P VG VG VG
Dilute Acid G P F G
Dilute Alkali F P F G
Lubricating Oils G VG G VG
Petrol G P P VG
Degreasing Solvents P F F G
Polar Organic Solvents P F G G
Hydraulic Oil (Silicone) G F F G
Hydraulic Oil (Phosphate Esters) P F F P
Working Temperature Minimum °C -30 -40 -50 -10
Maximum °C 115 90 250 200

VG = Very Good: G = Good: F = Fair: P = Poor: U = Unsuitable:

These ratings are intended as a general guide to the suitability of the rubber. Individual compounds vary. For specific information or to match criteria simply call or e-mail us.

 

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