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MINERVA RUBBER & ENGINEERING WORKS
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Butyl Washers

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Butyl Washers Specification

Load Capacity
Medium to High

Finish
Matte black

Material
Butyl Rubber

Shape
Flat, Circular

Thickness
2 mm to 10 mm

Surface Treatment
Smooth, Non-corrosive

Standard
ASTM / IS / Custom available

Application
Sealing, Waterproofing, Vibration Dampening

Weatherability
Superior

Compression Set
Low

Packaging Type
Box / Polybag

UV Resistance
Excellent

Elongation at Break
300% minimum

Temperature Resistance
-40°C to +90°C

Tensile Strength
8 MPa minimum

Diameter Range
10 mm to 100 mm

Hardness
50-70 Shore A

About Butyl Washers

The Butyl Washers which is notable for its ring shaped appearance, is usually installed in space between a specific surface and nut or screw. The screw or nut is used to position this washer onto a piece of hardware. The washer is larger than used screw head and its center hollow section is smaller than the nut used to fasten it. This unique design is advantageous for improving the tension between two connecting points.
Generally, rubber made washer is suitable for applications that need air tight sealing. It is meant for hermetic sealing of those items that are exposed to moisture or different types of fluids. The utilization of this washer helps to inhibit scattering of vibration from one part to other in order to lower noise rate.

This type of washer is extremely durable and has high strength. It remains functional for longer period, especially when the fasteners around it are loosened or tightened often.

One of the advantages of this washer is that it possesses higher elasticity level than its metal counter parts. This feature of washer ensures tight positioning of fasteners around it and enables fasteners to decrease or increase their tightness as required in different applications.

This Butyl Washers made of rubber is commonly used to mount computer accessories like hard disk drives and fans, as sealing part in control valve for taps during plumbing work and in devices like HVAC air conditioner, heating equipment and ventilation system that are exposed to condensation. The utilization of this rubber item can also be noticed in swimming pools, pressure washers, boats and different sorts of water related systems.

We are acknowledged for our expertise in manufacturing of Rubber Washer by using different grades of rubber that include EPDM, silicon, natural, nitrile, Viton® and others. Customers can obtain washer in customized configurations like specific fluid resistance properties and dimension from MREW as it strives its best to offer custom made washer. Customers can communicate with us regarding their queries on washers without any hesitation.

Durable Performance in Extreme Conditions

Butyl washers are designed to withstand harsh temperatures, ranging from -40C to +90C, ensuring reliability in both hot and cold environments. Their superior weatherability and UV resistance make them an excellent choice for outdoor installations, providing long-term protection and stability.

Engineered for Versatility and Sturdiness

With a hardness of 50-70 Shore A, tensile strength of 8 MPa minimum, and a compression set that remains low, these washers offer both flexibility and resilience. The wide diameter range and matte black finish cater to various industrial needs while maintaining an appealing appearance.

Customized Solutions for Diverse Applications

Manufactured according to ASTM, IS, or client-specific custom standards, butyl washers are versatile solutions for sealing, waterproofing, and vibration dampening. Their superior load bearing and non-corrosive properties support reliable use in construction, manufacturing, and outdoor environments.

FAQs of Butyl Washers:

Q: How do butyl washers provide superior waterproofing and sealing?

A: Butyl washers have excellent elasticity and a low compression set, allowing them to conform precisely to surfaces. This creates a tight seal that prevents water ingress, making them highly effective in waterproofing applications.

Q: What industries commonly benefit from using butyl washers?

A: Butyl washers are widely used in construction, manufacturing, automotive, and electrical sectors. Their resistance to weather and UV light, along with reliable vibration dampening, makes them ideal for outdoor and heavy-duty industrial purposes.

Q: When should you choose butyl washers over other types of washers?

A: Select butyl washers when you need reliable performance in environments with temperature extremes, exposure to sunlight, or frequent vibrations. Their high elongation and durability ensure long-term effectiveness in such demanding conditions.

Q: Where are butyl washers typically installed?

A: They are commonly installed in joints, flanges, mounting assemblies, and waterproof barriers. Their flat, circular shape and range of diameters allow for versatile integration across various equipment and structures.

Q: What is the manufacturing process for butyl washers?

A: Butyl washers are produced by molding butyl rubber into flat, circular shapes, followed by surface smoothing to achieve a non-corrosive matte finish. They can be manufactured to standardized (ASTM/IS) or custom specifications based on user requirements.

Q: How does excellent UV resistance benefit outdoor applications of butyl washers?

A: Their superior resistance to UV radiation ensures that butyl washers do not degrade, crack, or lose elasticity when exposed to sunlight. This extends their operational lifespan and ensures consistent performance in outdoor settings.

Q: In what way does the medium to high load capacity enhance butyl washer usage?

A: The strength and resilience of butyl washers allow them to support substantial loads, making them dependable for applications that require both sealing and bearing strength, such as structural joints and heavy machinery mounting.

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