Many members of the Fluid Sealing Association (FSA) Non-Metallic Expansion Joints Division and of the Expansion Joint Manufacturers Association (EJMA) feel that expansion joints are the forgotten components of many piping systems. Other piping system components—flanges, gaskets, strainers, valves, pumps and the pipe itself—seem to get most of the design time.
In many ways, expansion joints are the most important components of a well-designed piping system. They are the “living and breathing” dynamic part of the whole system.
Without well-designed and well-placed expansion joints, parts such as pump nozzles, valve bodies and pipe anchors could face excessive loading and vibrational fatigue. Without proper compensation, thermal growth at elevated temperatures can damage some pipes, reducing their operating life.
This article will discuss the basics of expansion joints and what you need to know for selection and specification.
DuPont™ Kalrez® 6190 perfluoroelastomer parts are a carbon black-filled product specifically designed for custom part and high volume applications. It has excellent thermal stability good mechanical strength properties and can be used in both static and dynamic sealing applications up to 300 °C (572 °F). In addition, Kalrez® 6190 is resistant to most chemical solvents but is not suggested for use in steam, strong acids or strong bases.
Optimal rubber seal performance is crucial for manufacturers and engineers. If for any reason the rubber seal malfunctions, it could result in anything from corrosion and water damage to weathering and loss of air/heat. Because of this, it is of the utmost importance to be aware of how temperature affects rubber seals.
This blog will discuss the affects that temperature can have on rubber. High temperatures and low temperatures will have different affects on performance.
While seal performance, leakage control, and wear-life characteristics are frequently discussed, one critical aspect of a successful sealing system is often overlooked — how a seal is contained in the hardware.
Whether you want to call it a gland or a groove, the physical space for housing a seal is an important part of the system’s performance. The type of gland greatly dictates the ease and even the possibility of seal installation. Certain seals demand specific gland types, so it’s essential to take these requirements into account.
Below we’ll discuss the most common types of rod and piston glands and what seals work best for each one.
Vesconite Hilube bowl, stuffing box, suction, and line-shaft bearings continue to operate in a condensate pump ten years after installation.
This long-standing Vesconite customer located in Virginia reported the success to pump representative Charlie Simpson in October 2021.
The customer is a pump repair workshop that offers timely and cost-effective repairs and specifically offers upgrades to shafting, bearings, and wear rings to enhance performance and efficiency in older pumps as well as repairs and rebowls vertical turbine pumps.
Versatile and easy-to-install, this 100% ePTFE sealing cord is a cost-effective solution for large steel flanges in general-use applications.
Joint Sealant, the first form-in-place gasket, was invented by Gore more than 40 years ago. It is a time-tested sealing solution for steel flanges with large diameters, rectangular or irregular shapes, and rough or pitted surfaces. When compressed, this soft, conformable cord forms a thin yet strong seal. It can also seal applications where available bolt loads are low.
Versatile GORE Joint Sealant is standard sealing material for many MRO (Maintenance, Repair and Operations) teams because it seals reliably – and because it’s easy and cost-effective to install. For most applications, just peel off the adhesive backing, apply to the surface, and overlap the ends.
Split Clipper® Oil Seals have the same superior characteristics as solid general purpose Clipper Oil Seals, but are factory-split at one place in the circumference. This permits installation over the side of a shaft, rather than over the end, and often can save dismantling the equipment in order to replace the existing rotary shaft seal.
Solid Clipper Oil Seals should be used whenever practical to provide maximum bearing protection in rotating shaft applications. However, installing a solid seal in a failed application can be costly and time consuming. In such cases, Split Clipper Oil Seals can be used to minimize unscheduled downtime, specifically where equipment cannot be uncoupled. These seals will provide long and efficient service until major or scheduled machine overhaul permits convenient installation of a regular non-split seal.
Split Clipper Oil Seals are available in Series R, RPD and RUP profiles, depending upon shaft diameter. RUP and RPD profiles are general purpose
Gallagher Fluid Seals' is happy to present our newest case study for customers who would benefit from reading through a custom FKM seal application.
Our customer is a global leader in the manufacturing of premium residential and commercial venting systems. Their systems and products are designed for ventilation of exhaust gas and other specialty gases.
Acidic condensate was attacking the silicone seal when the pipe was in a horizontal position, causing corrosion, failure, and downtime.
Read this case study to see the GFS solution and great results.