Polyurethane Molding/

Polyurethane Rods

Polyurethane rods, or bars, are straight, uniform polyurethane products that are often circular or rectangular, but may have many cross sections in different shapes. As an elastomer containing urethane carbamate links, using polyurethane to fabricate rods offers several advantages over other common materials such as rubber or plastics; including excellent sound dampening properties and electrical insulation.

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Gallagher Corporation
Gurnee, IL
800-373-8793
For 47 years, the Gallagher Corporation has been serving virtually every industry. They are dedicated to helping customers improve. The talented staff is able to help establish and prioritize your performance needs, recommend the proper material, provide prompt quotations and produce the quality part you need. For your next order of polyurethane rods, call Gallagher.
 
American Urethane, Inc.
Odenton, MD
800-394-7883
For FDA-approved materials for use in clean-room environments, contact American Urethane. Their polyurethane rods have many benefits including extensive wear, abrasion resistance, elasticity, solvent resistance, color acceptability, low tooling costs and can withstand extensive temperature changes, amongst others. For your next order, be sure to call for a quote.
 
Unicast Inc.
Easton, PA
800-275-0818
At Unicast Inc. they believe the customer should be able to buy the product they want, such as polyurethane rods, directly form the manufacturer. So this is the service they provide. They make the products and deliver them straight to you. The company is able to offer an extensive line of products and if they don't have exactly what you are looking for, they can custom produce the part as well.
 
FallLine Corporation
Reno, NV
800-325-5463
At FallLine Corporation, they believe that clear, effective dialog can save hours of time and minimize the possibility of errors. It is for this reason they invite customers to communicate directly with their engineering staff so that all difficulties can be solved quickly and efficiently. For all your product needs, including polyurethane rods, be sure to contact FallLine.
 
Weaver Industries, Inc.
Denver, PA
717-336-7507
The talented and experienced sales staff at Weaver Industries is fully capable of providing technical support along with the ability to answer all graphite and machining questions. When it comes to polyurethane rods, they have the perfect solution to fit all your requirements. The customer service staff is prepared to provide timely quotations and help you find a cost effective product.
 
Western Roller Corporation
Bend, OR
800-541-2317
At Western Roller Corporation it is their mission to never compromise on quality. Their sales, engineering and production staff is constantly striving to improve quality and production methods to provide their valued customers with the highest quality and most cost effective products. For your next order of polyurethane rods, make sure to call Western Roller.
 
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Industry Information

Polyurethane Rods

Beneficial characteristics of polyurethane rods include abrasion, tear and oil resistance, high load bearing capacity, broad operating temperature range, durability and excellent elastic memory. Polyurethane rods can be used in a wide range of applications, and are often utilized by industries such as: industrial manufacturing, for parts such as conveyor rollers, bearings, bushings and gears; automotive, for brake pads, couplings and bumpers; and construction, for their weather-resistant properties. Polyurethane rods can also be used for applications such as car suspensions, wear strips, noise dampeners, cutting bars, spacers and conveyor scrapers. In addition, polyurethane rods are popular for use in machining prototypes and short run parts as well as metal forming and bulge forming processes. However, some limitations of polyurethane rods are that they are not recommended for continuous use at temperatures exceeding 225ºF or below -90ºF, with gradual stiffening beginning at 0ºF.

Polyurethane rods are most often fabricated using an open molding or casting process, although they can also be fabricated using various other methods. Since the raw materials of polyurethane exist in a liquid state, it lends itself particularly well for molding because it is easy to mix and measure. The raw polyurethane materials react with one another to form a pre-polymer, and as a result a curative is introduced to the pre-polymer during the polyurethane molding process in order to complete the polymeric transition. Introduced to the cavity of the mold at low pressures, the polyurethane is then heated and cured to form the final rod form. Polyurethane rods may also be formed using closed casting, but it is far less common. Closed polyurethane casting differs in that it uses pressure in addition to heat in order to cure the polyurethane. Casting polyurethane creates additional tensile strength, although polyurethane rods can be formed by machining them from already formed polyurethane sheets. In addition, polyurethane rods may be extruded. This process involves processing through a screw extruding machine that consists of a heated shearing screw conveyor or twin screw conveyor and a die through which the heated and pressurized polyurethane is squeezed and thus formed into the bar shape. Polyurethane rods are often available in both custom and stock sizes.