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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.
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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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