Cast Urethane Washers
Providing Excellent Mechanical Strength & Wear Resistance
Urethane washers are used in multiple industries and can have numerous applications but are especially useful when assembling mechanical parts using bolts and nuts.
Molded urethane washers are used in a variety of industries including construction, aerospace, electrical and automotive. Urethane washers are fundamental to the function of many engineering processes and machinery.
Polyurethane washers are renowned for their high tear strength, good wear resistance, and aptitude for sealing and cushioning.
Available Custom Washers Specs
PSI excels in meeting your needs for custom polyurethane washers. PSI offers custom sizes, formulas, colors, and durometers (hardness), as well as tight tolerances, ground finishes, and dual durometer rings to meet the specific needs of your business. Select from a range of flexibility in hardness and gain increased durability over an alternative rubber washer with urethane washers from PSI. Our most common hardness options are:
- 25 Shore OO
- 40 Shore OO
- 50 Shore OO
- 20 Shore A to 90 Shore A
- 50 Shore D to 70 Shore D
DUROMETER REFERENCE CALCULATOR
For reference, this hardness is as soft as a Gel Shoe Insole
For reference, this hardness is as soft as a Rubber Band
For reference, this hardness is as soft as a Pencil Eraser
For reference, this hardness is as soft as a Tire Tread
For reference, this hardness is as soft as a Shopping Cart Wheel
For reference, this hardness is as soft as a Hard Hat
Our staff members are happy to assist you with your urethane washer project, from prototype to full production. To receive the most accurate quote, please have the following information on hand:
- Desired Color
- Desired Volume
- Outer Diameter
- Outer Diameter Tolerance
- Inner Diameter
- Inner Diameter Tolerance
- Thickness Tolerance
Urethane Washer Benefits
As a material, urethane has physical properties that make it a popular choice for conditions that rubber simply cannot withstand. For instance, urethane offers more abrasion resistance than its rubber counterpart, can be manufactured in a broad spectrum of colors and sizes, is non-marking, and will return to its original shape (without taking a set, like rubber).
In general, urethane offers many advantages over metal washers. Urethane washers will not gall or scratch mating parts. Unlike both metal and rubber washers, urethane washers will not become brittle over a long duration of time under normal circumstances. They are also non-conductive and far surpass general grades of rubber washers with regards to ozone, shock absorption, and tear resistance and in general, they tend to cost far less than their metal counterparts.
Applications for Urethane Washers
Urethane washers are optimum vibration dampeners and can remain flexible at low temperatures. They perform well when utilized in abrasive resistant situations and are highly resistant to water, weather, hydrocarbon, mineral oils, and most chemical substances. Urethane washers also have tight sealing capabilities and since urethane is an elastomer, they can conform to nearly any shape.
Type of Washers
A washer is a thin, flat disc with a hole in the center. Depending on the construction material, washers can be used to distribute the load of a threaded fastener (like a screw or a nut), reduce vibration, prevent galvanic corrosion, or act as a spacer, spring, wear pad, locking device, or seal. There are generally three types of washers: plain washers, spring washers, and locking washers.
Plain washers disseminate the weight of a load to prevent a surface from being damaged or to provide electrical insulation.
Spring washers are flexible enough to prevent a fastening from loosening due to intense vibration.
A locking washer can also be a spring washer; locking washers prevent materials (like a nut/bolt) from unfastening and coming loose.
Ask Our Experts.
Contact us today to learn how we can meet your project’s requirements.