6 Mounting Plate Gaskets For Vibration Control In Rvs

The incessant rattling of a loose cupboard door or the low-frequency hum of a rooftop air conditioner can turn a dream road trip into a test of patience. Vibration in a small, mobile space isn’t just an annoyance; it accelerates hardware fatigue and prematurely loosens the critical fasteners holding a rig together. Strategic dampening with high-quality mounting plate gaskets effectively decouples hardware from the chassis, creating a quieter and more structurally sound living environment.

Disclosure: As an Amazon Associate, this site earns from qualifying purchases. Thank you!

Sorbothane Sheet: Best for Sensitive Electronics

Sorbothane is a unique viscoelastic polymer that acts like both a liquid and a solid, making it the gold standard for shock absorption. It is the premier choice for protecting sensitive electronics like routers, solar charge controllers, or internal inverters that suffer from the constant micro-vibrations of travel. Unlike standard rubber, it absorbs energy across a wider frequency range, preventing mechanical stress from damaging delicate internal circuitry.

When mounting expensive monitoring hardware or high-end sound equipment, do not rely on standard hardware store washers. A Sorbothane sheet can be cut to fit the exact footprint of an enclosure, providing an isolated bed that dissipates kinetic energy before it reaches the housing. If the equipment must survive harsh washboard roads or off-grid trail excursions, Sorbothane is the essential investment.

Isolate It! Neoprene: Best All-Purpose Gasket

Neoprene is the workhorse of the vibration isolation world, striking an ideal balance between durability, cost, and vibration attenuation. It handles environmental exposure exceptionally well, resisting UV rays, moisture, and temperature fluctuations that would degrade cheaper foams. This makes it the go-to gasket for external applications or high-humidity areas like galley sink mounts or water pump foundations.

For general-purpose tasks—such as silencing a rattling cabinet door, padding a folding table mount, or isolating a propane tank cradle—Neoprene is virtually unbeatable. It compresses enough to create a tight seal but retains its shape over years of use, preventing that dreaded “loose mount” feeling. Select this material if the goal is a reliable, set-it-and-forget-it solution for the various interior mechanical interfaces within the rig.

LORD Plateform Mounts: Best for Heavy Machinery

When dealing with heavy, engine-driven equipment like on-board generators, standard pads often fail under the concentrated mass. LORD Plateform mounts are engineered specifically for high-load applications where structural integrity is non-negotiable. These mounts utilize bonded rubber-to-metal technology to withstand significant shear and compression forces, keeping heavy mechanical units securely anchored while isolating the coach from their vibrations.

These are not intended for minor cosmetic fixes but rather for critical mechanical support. Use them for mounting diesel heaters, generators, or heavy grey-water pumps where metal-on-metal contact would otherwise transmit noise throughout the entire frame. If the equipment involves moving parts or combustion, trust industrial-grade LORD mounts to protect the integrity of the surrounding structure.

DiversiTech EVA Pad: Best for Rooftop AC Units

The rooftop air conditioner is arguably the greatest source of structural resonance in any RV. DiversiTech EVA (Ethylene Vinyl Acetate) pads are specifically formulated to handle the significant weight of an AC unit while dampening the hum of the compressor. They provide a broad, stable footprint that distributes the load evenly across the roof substrate, preventing localized compression damage to the roof membrane.

These pads are highly resistant to the extreme weather conditions experienced on a roof, including high heat and torrential rain. Because they are thick and resilient, they offer superior sound isolation compared to the thin gaskets typically included with stock AC units. Replacing a stock gasket with a high-density EVA pad is a major upgrade for anyone looking to reclaim a quiet night’s sleep.

VibraSystems VIBX Pad: Best for Custom Shapes

Sometimes, a project requires a non-standard geometry that off-the-shelf round or square gaskets simply cannot fulfill. VibraSystems VIBX pads are designed for easy modification, allowing you to trim them to size or drill through them without compromising their structural integrity. They are ideal for complex layouts where multiple components share a mounting plate or where the surface area is irregular.

These pads are particularly useful for DIY van conversions where space is tight and mounting brackets often need to be custom-fabricated. Their ability to hold up under compression makes them suitable for everything from solar panel rack footings to customized battery box bases. If the configuration requires a bespoke approach, choose VIBX for its versatility and ease of field-modification.

Everbilt Pad: Best Budget & DIY-Friendly Option

For the casual DIYer or quick maintenance jobs, Everbilt pads available at most local hardware stores provide adequate isolation for non-critical components. They are easily sourced, inexpensive, and perfect for stop-gap measures or light-duty applications. While they lack the specialized vibration-dampening characteristics of engineered polymers, they are significantly better than having no buffer at all.

Use these for non-structural applications like padding the base of a microwave, lining the interior of a toolbox, or preventing a small kitchen appliance from “walking” during travel. Do not use them for heavy engine mounts or critical safety-sensitive hardware where long-term material fatigue is a concern. They are a convenient, low-risk starting point for organizing a rattle-prone rig.

Choosing Your Gasket: Rubber Neoprene or Sorbothane?

Selecting the correct material requires a candid assessment of the vibration source. Neoprene offers superior environmental resistance and longevity in varying temperatures, making it the best choice for exterior or climate-exposed hardware. Its performance is consistent and predictable, serving as a robust barrier against moisture and wear.

Sorbothane is a high-performance material that prioritizes energy dissipation over environmental durability. While it is unrivaled for protecting electronics from micro-shocks, it may soften or degrade if exposed to prolonged extreme heat or certain petroleum-based solvents. Choose Neoprene for the chassis and foundation, and reserve Sorbothane for the delicate internal components that require genuine shock protection.

Where to Use Vibration Gaskets in Your Rig

Vibration isolation should be applied at every major “mechanical handshake” within the vehicle. Focus first on high-output sources: water pumps, generators, and the AC compressor. These units translate the most energy into the walls of the rig, and silencing them provides the greatest immediate return on investment for passenger comfort.

Secondary focus should be placed on high-use interior components. Drawer slides, folding countertops, and cabinet latches benefit immensely from small adhesive-backed gaskets. By installing these at the points of contact, you prevent the rhythmic clicking and clanking that occurs during transit, which serves to preserve the longevity of cabinet hardware and door hinges.

How to Properly Install Your Vibration Gaskets

A gasket is only effective if it remains properly seated and under the correct amount of compression. Always clean the mounting surface with isopropyl alcohol before application to ensure any adhesive-backed gaskets maintain a permanent bond. If using non-adhesive gaskets, ensure the mounting bolts are tightened to the manufacturer’s specified torque; overtightening can “crush” the gasket, rendering the material too dense to dampen effectively.

Always ensure the gasket covers the entire contact surface of the mount. If the gasket is smaller than the mounting bracket, the pressure will be unevenly distributed, leading to premature material failure. Where possible, use stainless steel washers on both sides of the gasket to distribute clamping force evenly, preventing the bolts from tearing through the isolation material over time.

Sizing Your Gasket: Thickness and Durometer

Gasket sizing relies on two technical factors: thickness and durometer. Durometer measures the hardness of the rubber—lower numbers are softer and better for lightweight items, while higher numbers are necessary for heavy loads. Using a soft pad under a heavy generator will cause the pad to bottom out, while a hard pad under a lightweight radio will fail to absorb any vibration at all.

Thickness is equally vital; a thicker gasket provides more room for the material to compress and dissipate energy. However, do not assume thicker is always better, as excessive thickness can introduce instability or “wobble” in top-heavy installations. Match the gasket thickness to the gap distance, aiming for a firm fit that stays secure without needing to be squashed thin during the installation process.

Effective vibration control is the hallmark of a well-executed mobile build. By carefully matching the material to the specific mechanical task, you protect both the rig’s structural integrity and your own sanity. Take the time to identify the source of the noise or energy transfer, select the appropriate gasket density, and ensure proper installation to keep the rig running smoothly for years to come.