Custom Engineered Solutions
Custom Engineered Solutions
If you need a custom solution, our low tooling prices and short lead times make it easy to tailor a solution for you. Partner with us for successful problem-solving on your next application.
Custom Products
Sometimes standard parts aren't right for your application. Our knowledgeable engineering team is here to help guide you through the process of finding a custom solution.
Enhancing Manufacturing Efficiency with Custom Seals as Assembly Aids
In the world of manufacturing, precision, efficiency, and quality are paramount. As products become more complex and technology-driven, the need for streamlined assembly processes becomes increasingl…
Helpful FAQs
Don't see what you're looking for?
How do I determine what compound to use to best service my application needs?
The material that is selected for a specific application depends on several factors. The fluid it will come in contact with, the temperature it will deal with, the pressure the part is exposed to, the length of time the part must last, and how much the customer is wiling to pay are all contributing factors. Your best solution to finding the right compound for your application is to contact us. The trained staff of R.E. Purvis & Associates, Inc. will be able to isolate the compound that will best suit your application's needs.
What is standard material?
The phrase "standard material" is an interesting one. To some it may mean a specific compound, while to others it may be something much broader than that. As a basic rule, calling out a durometer and material is sufficient to allow us to find you a part from any number of sources that is able to meet your needs.
Nitrile - 70 Duro
Fluorocarbon (Viton) - 75 Duro
Ethylene Propylene - 70 Duro
Silicone - 70 Duro
Hydrogenated Nitrile (HNBR/HSN) - 70 Duro
Polyurethane - 90 Duro
Neoprene - 70 Duro
Fluorosilicone - 70 Duro
What is a cross section?
A cross section is what you'd get if you took a finished part, cut it in half, and looked at the ends. The cross section can tell you a lot about how the seal functions. For example, the cross section of a u-cup can give you a better understanding of how the lips function while the system is pressurized. Cross sections are often used to gather information on why a seal may have failed and to assess the locations where wear may be occurring.
What is a static application?
A static application is used to describe situations where the seal is located between two fixed components where no movement will be occurring. An example of a static application would be a face seal or gasket.
What is a dynamic application?
A dynamic application is used to describe situations where the seal is located between two components that are moving relative to each other. An example of a dynamic application would be a piston seal or rotary shaft seal.
Are you ISO Certified?
Yes, R.E. Purvis & Associates, Inc. has been ISO certified for 20+ years. Please visit the About Us page for a copy of our ISO certificate.