rotary seals
- December 05, 2023
PTFE Resins Commonly Used in Seals
In this article, we’ll look at the fillers employed in PTFE resins.
In its virgin form, PTFE resin isn’t the best sealing material for dynamic shaft applications. Therefore, different fillers are added to achieve the desired results. The most common fillers are fiberglass, graphite, carbon, coke flour and molybdenum, although any filler can be added to virgin PTFE resin as long as the material can withstand maximum sintering temperature of 710-730 degrees F.
In order to develop lip seal products properly from PTFE resins, it is vital that the engineer understands the favorable and unfavorable characteristics of the resin.
Several characteristics and properties of PTFE resin must be considered to realize a reliable product. They are:
- High wear rate of the PTFE resin and/or mating surface when improper fillers are used for a specific set of operations.
- PTFE resins have a high thermal expansion rate and compressive
- September 21, 2023
CNC Machining Seals with a Haas Automation Machine
CNC machining, which stands for Computer Numerical Control, is a manufacturing process in which pre-programmed computer software dictates the movement of tools and machinery.
The process can be used to control a range of complex machinery, from grinders and lathes to mills and CNC routers.
But in our case, Gallagher is utilizing this process to cut both custom and standard seal profiles for our customers.
CNC machining seals can be great for rapid prototyping or small production runs.
- September 07, 2023
Seals are small components that have a big function. At their most essential purpose, they keep fluid in and debris out. Failure to do this can lead to costly machine destruction, and even endanger the lives of people working around these machines. Preventing seal failure is very important on many different levels.
What Seals Are Up Against
Many factors can cause a seal failure. Being aware of these factors will help you in preventing an avoidable failure. Seals are under constant pressure because of the liquid or gas being contained. Typically, the seals in pipes or machinery have some type of matter within transferred at high velocities. This is a huge part of what they were designed to do, but too much or too little pressure could wear down the seals.
In addition, extreme temperatures can cause the seal to become brittle. A mixture of extreme temperatures and pressure is a recipe for cracking and leaking. Also, debris can contaminate the integrity of the seal. Even
- January 13, 2023
High Performance FKM Seals from Parker
The world is experiencing an unprecedented confluence of supply disruptions, and low-temperature fluorocarbon rubber polymers may be the most directly impacted. Some polymer companies have announced the discontinuation of some grades, while others are severely limited in the quantity they can produce. As a result, many seal manufacturers have announced that they need to meet customer demand for these high-performance materials.
- November 08, 2022
How to Calculate O-Ring Squeeze
Calcuating O-ring squeeze can seem complicated, but it's quite simple. In this video from the experts at Gallgaher Fluid Seals, calculating O-ring squeeze is broken down into four simple visual steps so you can ensure you are getting the right amount of squeeze for your specific application.
The full agenda can be seen below.
- October 07, 2022
A combination of crimped can seals will handle a variety of applications when a rubber lip seal is not your solution.
Rotary seals are often secured in sealing hardware by crimping the sealing element in a metal can. One of the most common rotary seals is a molded rubber lip seal in a can.
While not crimped, the can retains the sealing element, and stops the seal from rotating in the gland. Rotary sealing elements for low pressure (under 15 psi), are often nitrile or Viton rubber sealing elements.
This style of seal comes in many cross sections, and may include garter springs to help the seal stay engaged with the shaft. These seals are typically low in cost, and produced in high volume.
These seals are found in many low-pressure applications. However, as the pressures begin to climb over 10 psi and speeds run over 500 ft/min, friction generates heat,
- August 26, 2022
PTFE Radial Lip Seal Design
Before selecting a seal type and the filled PTFE compound to be used in a proposal, it’s important to have a thorough understanding of operating conditions and how they affect the seal performance.
- July 06, 2022
Rotary Seal Materials
Lip Materials | Case Materials
Part 3 of our video webinar series on rotary seals discusses the most common types of lip materials and case materials.
From an application perspective, it's imperative that any application or equipment utilizes the right material for temperature compatibility as well as media it may encounter.
This new video provides an overview of common lip materials and case materials for rotary sealing applications.
- June 03, 2022
VIDEO - INTRO TO ROTARY SEALS
Bonded Oil Seals | Parker Clipper Oil Seals | Garlock KLOZURE® Oil Seals
This video, part of our webinar series on rotary seals, dives into elastomeric rotary seals. This video will discuss the differences between traditional oil seals, Parker Clipper oil seals, and Garlock KLOZURE®
oil seals. And we'll also dive into the various applications for each oil seal, features and benefits, and configurations.
- April 27, 2022
VIDEO - INTRO TO ROTARY SEALS
How Rotary Seals work, Applications, Components, Shaft Recommendations, and Housing Recommendations
GFS is excited to bring you the newest video webinar series, this time covering Rotary Seals. In this first video, we will cover the basics of PTFE rotary seals. We'll talk about what they are, how they work, common applications, the components of a rotary seal, and various recommendations (lubrication, shaft, and housing).