Rubber parts blog

Types of Sandwich Mounts

Sandwich mounts are an often overlooked, yet incredibly important part. They provide a variety of...

Flex Bolt Sandwich MountsSandwich mounts are an often overlooked, yet incredibly important part. They provide a variety of benefits including excellent vibration control, low maintenance, high load carrying capacity, and energy control. Sandwich mounts are used for a wide range of purposes. They are used in automobiles, healthcare, military, agricultural and construction equipment, and more. 

Because sandwich mounts are used in so many applications and industries, there are many different kinds. From small bobbin sandwich mounts to large shear mounts, sandwich mounts are incredibly diverse. Sizes, shapes, and threads are all considerations for someone purchasing a sandwich mount. 

At RPM Industrial Rubber Parts, we are committed to providing high-quality, reliable sandwich mounts. Give us a call at (888) 842-5668 for more information.


If you are looking to purchase a sandwich mount but aren’t sure which one you need, then read on to learn more about the different types.

Access Selecting a Vibration Shock Isolator Guide

To learn more about vibration isolation mount design and which one you need, read our free guide. 


Rubber Flex Bobbin Sandwich Mounts

Excellent vibration control is not worth neglecting. Excessive vibration can damage equipment and cause discomfort for a machine operator. Bobbin mounts come in a few different sizes, however, they do range on the smaller size at less than half an inch up to 4 inches. 

Here are some of the different types of flex bolt sandwich mounts:

  • Vibration buffer
  • Dual-side metal plates with one stud 
  • Dual-side metal plates with no studs
  • Single side metal plate with one stud
  • Vibration foot
  • Dual-side metal plates with two studs

These sandwich mounts typically come in both UNC and metric threads for customizing the best fit. Bobbin sandwich mounts are used in control panels, compressors, and automobiles. They provide excellent isolation and vibration control. 

Square Pad Mount

A square pad mount looks different from a typical sandwich mount. These are about 5 inches wide and 2 inches tall. There are metal plates on both sides, however, the bottom side has a rubber lip so that the metal piece is covered. There are four holes for studs, to make installation easy.

These sandwich mounts are often used for machine installation. They help to protect both the machine and building floor from vibration damage. Square pad mounts may also be used in other situations, such as in agricultural machinery. They are perfect for providing optimal vibration isolation without complicated installation. 

Large Shear Mounts

These mounts are a type of large sandwich mount. They are unique in shape as the metal plate is a square and the rubber center is a sphere. The metal plate contains five stud holes in the middle and four stud holes in the corners. Here are some of the applications for large shear mounts:

  • Conveyors
  • Blowers
  • HVAC units
  • Machinery
  • Electric motors
  • Compressors and pumps
  • Shipping containers

Large shear mounts are excellent for all kinds of applications. Some of these mounts have a compression static load of up to 7,600 lbs and others have a shear static load of up to 1,200 lbs. These mounts may be just the part that you are looking for. 

Flex Bolt Sandwich Mounts

image004LORD Flex-Bolt™ Sandwich Mounts are some of the best on the market. Take one more thing off of your to-do list with these maintenance-free sandwich mounts. They contain specially designed elastomers so they are lightweight and easy to install. With high energy control capacity and excellent vibration damping, these sandwich mounts are the way to go. 

These mounts come in three different sizes and both metric and UNC threads. There are many applications for Flex-Bolt™ Sandwich Mounts:

  • Motorcycles
  • HVAC equipment
  • Light automotive and machine motors
  • Feeders
  • Vibratory rollers
  • Appliances

LORD provides some of the highest quality rubber products available. When customers choose these parts, they can be sure they are receiving only the best. LORD Flex-Bolt™ sandwich mounts come in a variety of shapes, sizes, and threads. They can be found as bobbin mounts, shear mounts, and other kinds of sandwich mounts. 

Top 4 Questions We Get Asked About Selecting the Right Vibration Isolation Mount


Molded Rubber Part Service

Whether you are searching for large shear mounts or bobbin sandwich mounts, RPM Industrial Rubber Parts has it all. We offer only the best products on the market, which is why we have partnered with LORD. Their Flex-Bolt™ sandwich mounts exceed expectations for vibration damping and load carrying capabilities. 

At RPM, we provide all kinds of rubber parts. Our rubber parts inventory includes:

  • Grommet isolators 
  • O-rings
  • Bumpers
  • Extrusions
  • Tubing
  • Binocular engine mounts
  • And so much more

Our team of experts is ready to help you find exactly what you are looking for. And if you can’t – our engineers will help you make it. At RPM, we specialize in making custom molded rubber parts. If you can’t seem to find the sandwich mount that you need for a project, then give us a call. 


Contact our team at (888) 842-5668 or click the link below.

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If you need rubber, we’ll have it. If we don’t have it, we’ll find it. If we can’t find it, we’ll make it.