Index of White Papers From Gallagher Corporation

Standard test method for measuring urethane abrasionAbrasion Resistance

One of the most common arguments for the use of polyurethanes today is the benefit gained in abrasion resistance. For decades polyurethanes have been used in highly abrasive environments due to their remarkable abrasion…(read more)

custom-cast-polyurethane-manufacturer-3Benefits of Castable Urethane

Castable urethane raw materials are liquid, which permits them to be pumped, metered, mixed and dispensed by machines under very precise control of temperature and ingredient proportions. Castable urethanes enter molds…(read more)

bulk-mod-formula-1Bulk Modulus of Gallagher Polyurethane Compounds

Bulk modulus is a term used to describe what happens to a material when uniform isostatic pressure is applied. The polyurethane used here at the Gallagher Corporation has a very high bulk modulus, which means it is… (read more)

Custom Cast Polyurethane -- Gallagher CorporationCast Polyurethane Manufacturer

Material selection is a vital aspect when it comes to producing cast polyurethane components. However, once the material is selected, more design work takes place to actually produce the cast polyurethane part….  (read more)

Compression setCompression Set, Creep, and Stress Relaxation

During long-term use of an elastomer under load, the stress-strain relationship will begin to change. This changing can be attributed to fatiguing of the elastomer. Fatigue strength is described in three…  (read more)

Cast Polyurethane manufacturerElectrical Polyurethane Properties

The electrical properties of polyurethane elastomers most commonly measured are as follows: Resistivity Dielectric Strength Dielectric Constant Power Factor Materials suitable for electrical insulators have high…  (read more)

Polyurethane SprocketFDA Approved, Food Grade Polyurethane

Original equipment manufacturers in the food processing industries can benefit from the versatility of urethane elastomer components. While not every urethane formulation can be approved as an FDA…. .(read more)

Polyurethane FinsFrictional Characteristics of Polyurethane

What are the frictional characteristics of polyurethane parts? The generally accepted rule of thumb for polyurethane elastomers is that friction against non-lubricated surfaces decreases with increasing……  (read more)

polyurethane bumpersImpact Resistance

Unusually high levels of stress and deformation can occur in structures, machinery and other equipment due to shock or impact loads. When one rigid member strikes another, stress levels spike because there is no…  (read more)

What is urethaneInsert Molding of Polyurethane Parts

Insert molding is possible with either cast or injected molded polyurethane processes. We can mold to inserts such as bearings, wheel and roller hubs, threaded fasteners, metal plates, and shafts. The insert can……  (read more)

Polyurethane AdhesionCotton Doffer Production

One of the most advantageous features of molding castable polyurethane is bonding it to other materials. Here at Gallagher Corporation, we are experts in bonding cast polyurethane to metals and other substrates….  (read more)

Gallagher Polyurethane with durometer gauge

Polyurethane Flex Fatigue

The elastic nature of polyurethanes makes them ideal candidates for applications where continuous flexing is experienced. However, when an elastomer is flexed continuously, failure generally occurs due to the development and propagation… (read more)

Polyurethane Injection Molding Gallagher CorporationPolyurethane Injection Molding

Polyurethane injection molding or polyurethane casting? Which is the best manufacturing process for your parts?   Polyurethane has been the material of choice at Gallagher Corporation….  (read more)

machining urethanePolyurethane Molding Tolerances and Machining

The following are design tips which improve the service life of urethane components, where urethane is bonded to metal. The object in all cases is to reduce or eliminate areas of stress concentration. Standard Molding Tolerances…  (read more)

Polyurethane CastingPolyurethane Properties

Molded polyurethane has excellent load bearing capacity and abrasion resistance. But, polyurethane also stands up very well in a large variety of environments. Understanding…  (read more)

Gallagher Polyurethane TestingPolyurethane Resilience

When a material is deformed, a certain amount of energy is required to achieve deformation. Recovery from deformation also takes a certain amount of energy. For polyurethanes, the ratio of energy… (read more)

No crush wheelPolyurethane Wheels and Rollers

Here at Gallagher Corporation polyurethane wheels and rollers are one of our specialties.  We’ve invested time and resources to develop simulation and testing equipment needed to ensure excellence. Gallagher…  (read more)

shear modulusShear Modulus

Why is determining shear modulus for polyurethane parts important? Elastomers are typically used in shear for parts such as mounting brackets and suspension assemblies. These types of applications are chosen because… (read more)

Tear Resistance of Polyurethane

Tear test specimens for polyurethaneWhen an elastomer is placed in an aggressive environment, several factors can contribute to the ultimate erosion and destruction of that material. One such material property that can be used to classify how well…  (read more)

Polyurethane PartsThermoplastic Urethane

Do you understand the difference between thermoset urethane and thermoplastic urethane?   Either type is useful for OEM applications. But, certain applications are better suited for one over the other.   Thermoplastic Polyurethane (TPU) is a. . .  (read more)

polyurethane parts

UV Stability of Polyurethanes

Polyurethane elastomers will degrade due to prolonged ultraviolet (UV) light exposure. The UV light targets certain chemical linkages depending on the type of chemistry used for a particular compound. When a part…..  (read more)

Transmitted Force at Various Frequency Ratios for PolyurethaneVibration Isolation with Urethane

The dynamic properties of urethane in combination with its high load bearing capacity make it an excellent choice for a number of vibration isolation applications. The first step in understanding how urethane can be used to… (read more)

VulkollanVulkollan — The Ultimate Elastomer

Vulkollan is one of the most powerful elastomers in the market, combining highest mechanical load-bearing characteristics with highest dynamic load-bearing capacity. Therefore, Vulkollan is preferably used for superior tasks in many…  (read more)