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Rubber Mounts and Anti-Vibration Pads

Rubber mounts and pads for equipment that runs fast enough not to need a spring, and for lining and levelling under bases. Pads come in sheets or modular blocks that you cut on site.

See the range
Corner of an air handling unit’s base frame on an API-MC modular pad, with its copolymer layer between the rubber

The range

Mounts, ribbed sheets and modular pads

Any of the pads can be stacked with a steel plate between the layers, for more deflection.

Rubber mounts

  • AVI-R open rubber mount: black rubber body with a threaded steel insert, seen at an angle
    AVI-R

    Open Rubber Mount

    Equipment bolts to the steel insert; colour-marked rubber in three hardnesses.

    Up to 8 mm (5/16″) deflection · 25–185 kg · 40 / 50 / 60 Shore A as standard

    Buy on Fixing Smith
  • ASI-R housed rubber mount: black rubber dome with a yellow threaded insert on a square steel base
    ASI-R

    Housed Rubber Mount

    Seismically restrained rubber mount for higher-speed equipment and high-frequency noise.

    Up to 3.4 mm deflection · up to 900 kg · 40 / 50 / 60 Shore A as standard

    Buy on Fixing Smith

Ribbed sheets

  • API-S single-side ribbed rubber pad sheet
    API-S

    Single-Side Ribbed Pad

    Ribbed on one side; also used as a lining.

    450 × 450 mm sheet, cut on site · 7 mm · up to 1.4 mm at 380 kPa

    Buy on Fixing Smith
  • API-D double-side ribbed rubber pad sheet
    API-D

    Double-Side Ribbed Pad

    Ribbed on both sides, for twice the deflection of a single-side sheet.

    450 × 450 mm sheet, cut on site · 14 mm · up to 2.8 mm at 380 kPa

    Buy on Fixing Smith
  • API-C pad: copolymer layer between two ribbed rubber layers
    API-C

    Copolymer & Ribbed Pad

    A copolymer layer between ribbed rubber, for more deflection.

    450 × 450 mm sheet, cut on site · 26 mm · up to 5.2 mm at 250 kPa

    Buy on Fixing Smith

Modular pads

  • API-M modular rubber pads: black rubber blocks with a bolt hole in each module
    API-M

    Modular Rubber Pad

    A 357 × 357 mm block of 50 mm modules, each with a bolt hole.

    10 mm · 90 kg per module

    Buy on Fixing Smith
  • API-MC modular anti-vibration pad bonded to steel plates, with a central bolt hole
    API-MC

    Copolymer & Rubber Modular Pad

    The modular block with a copolymer layer between the rubber, for more deflection.

    22 mm · up to 4.4 mm · 63 kg per module

    Buy on Fixing Smith

Datasheets, installation guides and certificates Downloads

Selection

Mount, sheet or modular pad?

MountsRibbed sheetsModular pads
FixingBolted through the insert or housingLoose or through-bolted with grommetsThrough the module holes
Thickness—7–26 mm10 or 22 mm
Load25–900 kg per mountBy area, 250–380 kPa63–90 kg per module
Typical useFans, pumps and packaged units bolted to the floorUnder bases and plinths, and as a liningUnder air handling units and equipment frames

In seismic zones

On a pad, equipment is not restrained. In a seismic zone it is held either by snubbers beside it, whose rubber cushion on the AS-A and AS-C is already API-S, or by bolts through the pad in rubber grommets. The ASI-R housed mount is seismically rated on its own.

Related productsSeismic Snubbers Restraint beside isolators, for equipment on open springs or pads.

Related engineering services

Noise and Vibration Control Isolation design for equipment and mechanical rooms, sized to the criterion the project has to meet.Seismic Calculations for Equipment Anchorage and restraint calculations for floor-mounted equipment, to the code the project has to meet.

Describe the equipment and what it stands on.

We will select the mount or pad and size it to the load.

Contact us