Choosing the right materials
There is a wide choice of vacuum pad materials available on the
market, however, Nitrile Rubber and Silicone cover the majority
The most common materials are covered below, however, when
in doubt please contact our Technical Office.
NBR (Nitrile Rubber)
Nitrile is the most commonly used material for vacuum pads,
being an all purpose rubber with good resistance to oils and
greases. The wear resistance is good.
Silicone have very good high and low temperature resistance
and does not leave marks on shiny/colourless surfaces. The wear
resistance is medium.
Special vacuum pads can be moulded from other materials such
as Viton (which has excellent chemical resistance but only a
medium wear resistance) and Polyurethane (a relatively hard
material with very good wear and chemical resistance). For
further information please contact our Technical Office.
Think about safety
When designing a vacuum system always remember to
build in a safety factor when sizing your pads,
particularly in instances where the vacuum pad is
mounted in the vertical position
• Size vacuum pad using the appropriate safety factor
• Choose a vacuum ejector with ample capacity
• Do not use a bellows type pad for heavy loads
• Install an in-line filter between vacuum pad and Ejector
• Do not use Quick Release fittings between pad and Ejector
• Where necessary, use a vacuum sensing switch to ensure
an adequate level of suction holding force.