Vesconite Performs Better Than OEM Forklift Spares

Bearing and wear part manufacturer Vesconite Bearings has increased its efforts to develop better -than-the-original-equipment-manufacturer (OEM) forklift parts.

The company has long known that its gantry support bearings, tilt cylinder bushings, side shift pads, mast pivot bushings, steer axle articulation bushings, king pin bushings and lever and pedal bushings offered low-friction, wear-resistant and high load capacity characteristics. The Vesconite parts last longer than the originals and do not need regular greasing. They are sought after by the forklift rental companies who appreciate the longer wear life and savings achieved from reduced maintenance.  Continue reading Vesconite Performs Better Than OEM Forklift Spares

Advanced PTFE Gaskets for Demanding Applications

picture of GYLON BIO-PRO PLUSAs a trusted supplier of high-performance sealing solutions to the pharmaceutical industry, the Garlock family of companies knows that gaskets can make or break a sanitary process. But how has material technology been evolving? This blog will discuss how material technologies are meeting manufacturing challenges to help pharmaceutical companies adapt to smaller batch sizes, frequent changeovers, leaner operations, vendor consolidation and stricter regulations.

Gasket performance directly impacts a manufacturer’s ability to safely and effectively operate a sanitary environment in pharmaceutical and bioprocessing industries,” says Stephen Doherty, Garlock’s global segment leader. “Regardless of whether the application is an integral part of the process, or within critical utilities such as clean steam, ultra-pure water (UPW) and water for injection (WFI), the demands on gasket material are tougher each year.” Continue reading Advanced PTFE Gaskets for Demanding Applications

New High-Performance Seals for Butterfly Valves

picture of custom butterfly valve sealsValves for the process industry must meet particularly high demands in terms of hygienic design, industry-specific approvals and resistance to CIP/SIP media. This also applies to the seals. Gallagher Fluid Seals’ partner, Freudenberg Sealing Technologies, has developed a new series of high-performance seals for butterfly valves. This was done in cooperation with their French customer Definox.

FST customer Definox needed a specific sealing solution for the development of a new series of high-performance butterfly valves.

The goal was to find the ideal combination of uncompromising tightness, simple installation, dead space-free sealing geometry and wear-resistant materials. Continue reading New High-Performance Seals for Butterfly Valves

Injection Molding – What is it, and what are the benefits?

In this brief blog, we will go over the high-level aspects regarding injection molding – what it is, the benefits, and how it generally works. Give us a shout if you think it might be a great fit for your next project or application!

What is injection molding?

Injection molding is a way to manufacture and produce parts in large quantities. It is often used in production scenarios where the exact same part is being produced over and over again in the thousands.

The main advantage of using injection molding is the ability to scale production in enormous portions, resulting in price per unit becoming much lower. While the initial investment may come with some added costs, it will eventually for itself over time and ultimately result in profit. Continue reading Injection Molding – What is it, and what are the benefits?

Gasket Types and Their Applications

Understanding the Difference Between Gasket Types

picture of gasketsAs our friends at Dichtomatik like to say, “where there are pumps and valves, there are also gaskets.”  Gaskets are critical components in fluid conveyance systems. There is a wide variety of types and materials that they can be made from.  Many of the most commonly-asked questions revolve around which gaskets are right for which situations for a variety of industries including but not exclusive to: food & beverage, oil & gas, construction, agriculture, energy & power generation, and chemical processing.

While far from an inclusive list, GFS wanted to quickly touch on some of the most common gasket types and materials often asked about.

A Quick Guide to Gasket Types:

Spiral Wound Gasket

Spiral-wound gaskets utilize two sealing elements – the winding and the filler – the winding behaves like an energized spring against the flange surfaces while the filler seals the imperfections between the two surfaces. An outside ring is standard in flange applications to center the gasket between the bolts and help prevent blowout.  Stainless steel inner rings are often added to prevent the windings from buckling inward potentially contaminating the media. They combine high strength with reliable sealing capacity. They function as well in low pressure and temperature applications as they do in more extreme environments, but are more expensive to produce compared to compressed fiber and elastomeric gaskets.

Sheet Gasket

The simplest type of gasket, this is made from common rubber elastomers or compressed fiber and can be easily cut into virtually any size with any configuration. While often suited for low pressure environments, sheet gaskets are an ideal solution for industry standard applications like creating a reliable seal between flanges and fittings for fluid movement.

Elastomer Sheet Gasket

Most rubbers are relatively inexpensive and can be easily cut into shapes on demand. Our friends at Dichtomatik, a subsidiary of Freudenberg Sealing Technologies, maintain a variety of sheet materials to meet customer requirements – including SBR, Neoprene, EPDM, NBR, and FKM.

Aramid Fiber Sheet Gasket

Aramid fibers are a particularly strong and heat-resistant form of synthetic fiber which can have exceptional strength when tightly-woven while being low-weight. They also are highly resistant to impact, abrasion, or chemical erosion.  However, they are also absorptive and have poor compression properties. A broad variety of compressed fiber sheets are available; they are versatile and inexpensive. They can generally handle maximum temperatures and pressures over 700°F and 1,000 PSI. 

picture of different gasketsElastomeric Molded Gasket

Also known as press-in place gaskets, these all-elastomer gaskets are custom-shaped and are designed for applications where there is a groove that positions the gasket between components to optimize the sealing performance in the groove. They are easy to install, require no adhesive, and are self-retaining and adaptable.

Custom-Made Gaskets

For all other applications, there are custom-made gaskets.  Gallagher Fluid Seals can help advise on material, design, and other gasket questions. Our suppliers place us in a position to provide a variety of materials, including flexible graphite, PTFE, FKM, FFKM, and more.

The original article was featured on Dichtomatik’s website and can be found here.

Gallagher Fluid Seals is a partner of Dichtomatik. For more information about finding the right type of gasket, contact our engineering department today.

The Best Way to Process Teflon® (PTFE) for Optimal Seal Performance

Below, we’ll explore how Teflon is processed for sealing purposes, and why we sometimes see variation in surface quality and/or cracks in finished Teflon seals.

picture of ptfe billet

The Two Ways to Process Teflon® for Seals

There are different grades of Fluoropolymers that can be used to manufacture seals. There are melt processable fluoropolymers, which are rarely used in the seal manufacturing process due to cost, and granular PTFE.

Melt processable fluoropolymers allow for injection molding, and exhibit many of the same characteristics as granular PTFE. But the first grade doesn’t allow for the flexibility of molding and machining, which is why most of our seals are made from granular PTFE.

Milling Granular PTFE for Seals

Continue reading The Best Way to Process Teflon® (PTFE) for Optimal Seal Performance

Kalrez® Composite Seals for Standard and Complex Geometries

For over 40 years, DuPont™ has been relentless in pursuing improvement in the manufacture of perfluoroelastomer (FFKM) parts. Elastomeric parts typically consist of three components: a polymer chain (the backbone of the elastomer), a crosslinking system (which links the polymer chains together and is the key to elasticity and sealing performance), and a filler system (used to enhance mechanical properties). Based on extensive experience, DuPont™ adjusts these components to optimize seal performance.

Composite Seals for Standard and Complex Geometries

kalrez spectrum o-ringsFor demanding standard and complex composite seal applications, Kalrez perfluoroelastomer parts are the elastomer of choice designed and molded to your specific requirements.  Kalrez composite seals offer unique one of a kind parts, in a wide variety of custom family shapes, standard geometry, and miscellaneous bonded parts, including small and large parts.  Whether you have a niche application or high volume runs, your sealing requirements can be met.  Kalrez composite seals are available in a variety of compounds depending on the thermal, chemical and plasma resistance required.

Kalrez® composite seal applications include; micro valves, micro-pumps, downhole oil and gas, semiconductor chip process equipment, ink jet, beverage dispensers, car wash pumps, printers, paint spray, refineries, CPI and more.

Types of Kalrez Shapes/Geometries

Continue reading Kalrez® Composite Seals for Standard and Complex Geometries

New Self-Retaining Static Seal Can Efficiently Seal Bores in Non-Pressurized Applications

Article re-posted with permission from Parker Hannifin Sealing & Shielding Team.

Original content can be found on Parker’s Website and was written by Vivek Sarasam, heavy duty mobile Sr. application engineer, and Jeffrey Labonte, market manager.

Roll2Seal® is an all-new sealing solution developed by Parker Prädifa for easy and effective closure of bores in non-pressurized applications. The clever, patent-pending design combined with an equally new assembly process enables simple and accurate installation of the seal, which rolls into its seat undamaged and without a lead-in chamfer.

picture of Roll2Roll Seal

What can be done if a bore requires radial sealing but lack of a lead-in chamfer prevents the installation of a seal? A situation like this occurs, for instance, when an existing bore should be closed with a cover and space around the bore is too small for a classic flange seal. A seal would not survive an attempt to install it in a bore without a lead-in chamfer. Part of the seal would be sheared off at the edge of the bore even if the edge was chamfered or rounded.

The principle: rolling instead of sliding

Continue reading New Self-Retaining Static Seal Can Efficiently Seal Bores in Non-Pressurized Applications

Using Split Mechanical Seals – Splitex by EagleBurgmann

What is a split mechanical seal?

picture of splitex
Splitex – A split seal by EagleBurgmann

A mechanical seal is a device used to contain fluid within a vessel where a rotating shaft passes through housing, or sometimes where housing rotates around a shaft. These vessels are usually pumps, mixers, agitators, grinders, etc. The purpose of a mechanical seal is to allow the shaft to rotate freely without allowing large amounts of fluid to escape.

How is a split mechanical seal different from a component or cartridge seal?

A split seal comes in two separate pieces. Unlike ordinary cartridge mechanical seals, these two pieces can be installed or removed from around the shaft without disassembling the equipment. When joined, the sealing elements are mated to create a proper seal around the shaft.

When should a split mechanical seal be used?

Continue reading Using Split Mechanical Seals – Splitex by EagleBurgmann

Vesconite Hilube Wear Rings Increase Pump Efficiency

picture of vesconite wear rings

Vesconite Hilube is a bearing material specially designed for long life, low maintenance bearings and bushes.

Vesconite Hilube is internally lubricated with advanced solid lubricants to give a very low friction, even without additional grease or other lubrication.

Vesconite Hilube Wear Ring Benefits:

  • No water swell
  • Superior performance
  • Extended wear life
  • Low friction
  • High load-bearing strength
  • Dimensional stability
  • Temperature limits
  • Shaft friendly
  • Chemical resistance

Vesconite Wear Rings Improve Pump Efficiency

Independent tests by a major pump manufacturer prove corrosion-free Vesconite Hilube wear rings safely allow reduced running clearances and improve pump efficiency.

Bronze casing wear rings with a clearance of 0.3 mm were tested against no-swell Vesconite Hilube at 0.1 mm. Continue reading Vesconite Hilube Wear Rings Increase Pump Efficiency