Blog

What industries are ideal for cast polyurethane parts

The versatility and strength of polyurethane is incredible! It can withstand abrasion, oil, and chemicals, and performs extremely well in difficult environmental conditions. Here are some of the industries that use Polyurethane plastics:

Automotive: Did you know that your car seat cushions are probably made from polyurethane foam? Polyurethane is...

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Great customer service: Not just another supplier in a sea of many!

While computers handle many processes in plastics molding, extrusion, and manufacturing, the relationship a plastics company has with is customers is one of the most important aspects of the job. It is the key to our success at Harkness Industries. We focus on building relationships before we make a sale. When we fully understand your reasons...
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4 Questions to ask your polyurethane manufacturer

Are you looking for a cast polyurethane manufacturer? As you talk to prospective manufacturers, here are a few questions to ask to make sure you pick the right one:
  1. What equipment do you use? This is a great question! Depending on what you need made, certain machines are better suited for your project than others....
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All about color variances in natural polyurethanes

If you’re considering a natural urethane for your next manufacturing project, here’s what you need to know about possible color variances. The color of natural polyurethane can vary from supplier to supplier, and is impacted by a variety of environmental factors. Typically, they vary between a light tan (almost yellow) to medium-dark amber (almost green). No...
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What you need to know about Profile Extrusion with plastics

Harkness Industries has over 50 years experience in plastics manufacturing. This experience gives us a unique view of the world of urethane plastics and profile plastic extrusions. In the profile extrusion process, plastic in pellet form is fed into the extrusion machine where it is softened by friction and heat. This softened plastic is fed through...
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Why Performance plastics are good for the environment

Performance plastics live up to their name and provide excellent performance, and are also a more environmentally conscious choice to other packaging materials. Much of the energy and environmental savings comes from the fact that they are so lightweight.

What makes performance plastics so great?

  • They can withstand chemicals and corrosion, or are fully biodegradable.
  • They...
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What you need to know about Standard Urethane Products

Cast Urethane is known for its roughness, durability, and quality. Here’s what you need to know about our standard urethane products.
  1. Cast urethane products improve service life. Our MP Series product line, for example, can improve service life 10-20x when compared to conventional rubber or plastics. Urethanes also outlast hardened steel by 5-1!
  2. Stock shapes...
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Guide to Machining Cast Polyurethane Elastomers (Part 2): Knifing, Milling, Drilling, & Grinding

This month, we continue our guide to machining cast polyurethane elastomers and will be taking a closer look at knifing, milling, drilling, and grinding: Knifing: It’s important that the knife tool be as thin and sharp as possible to get the most precise cuts when close tolerances are present. For metals with hardnesses between 70A and...
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Guide to Machining Cast Polyurethane Elastomers Part 1: Sawing, Turning, Facing, and Boring

Machining metal and plastics are similar some aspects, but each have unique properties where it differs. In Part 1 of our guide to machining cast polyurethane elastomers, we look at 4 machining techniques: sawing, turning, facing, and boring: Sawing: We’ll most often use a band saw for cutting urethane because the long blades run cooler, and...
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