9040 (Neoprene) Mount

The 9040 series of Neoprene mounts has a fully encapsulated metal base and top plate (tapped M12) for exposed applications.
Stiffness Guide Max Load (daN)
Medium-Soft (/3 - 50Sh°A) 450
Medium-Hard (/4 - 60Sh°A) 700
Hard (/4 - 70Sh°A) 1000

The mount will deflect circa 3.5mm with the above loads. 

These mounts are manufactured in the UK to a particularly high standard; Metals are bonded to rubber using a 2 layer bonding system (most manufacturers use a single layer system).  The advantage of this approach is longevity of the bond, particularly in more environmentally challenging conditions.