Monthly Archives: February 2016
- February 25, 2016
Normally, we use this space to discuss Gallagher Fluid Seals products and services.
But today we’re sharing some good news: Gallagher CEO Joe Gallagher and his wife Kathy were honored recently for their work with Montgomery County Community College.
According to the college’s alumni magazine, the Gallaghers were inducted into the college’s Alumni Hall of Fame – as honorary alumni -- at a ceremony late last year.
- February 23, 2016
Over the past few weeks, we’ve been discussing the basics of PTFE rotary seals. In today’s entry, we’ll take a look at PTFE radial lip seal design principles.
PTFE radial lip seals generally incorporate a uniformly thin element cross section, made to compensate for the high flexural modulus of PTFE, especially in cases of severe shaft run-out. The thin sections also minimize thermal expansion and compressive “creep” and their effects on maintaining a controlled contact pattern on the shaft surface.
Most PTFE seal constructions have the “body” portion of the element clamped between the two metal cases. To maintain proper retention pressure on the element, a thin element keeps compression set and “creep” at a minimum.
- February 18, 2016
ThorPlas-Blue lifetime lubricated bearings provide improved reliability to users by extending equipment operating life and increasing the Mean Time Between Failures (MTBF) across a wide spectrum of industrial applications.
Developed as a maintenance-free solution to replace greased bronze bearings, the proprietary engineered thermoplastic bearing is capable of dynamic operating pressures up to 45 MPa (6527 psi) and can easily be back fit into virtually all applications where greased bronze is currently installed. Higher pressures may be possible with Thordon Engineering review.
ThorPlas-Blue grease-free bearings help reduce maintenance costs and noise levels, have equal or better operating performance over metal bearings, and are available in rod and sheet forms. ThorPlas-Blue not only has a lower density and thus less weight in comparison to metal bearings but it is also self-lubricating which means no grease or oil while eliminating bearing corrosion concerns. A stainless steel or non-corrosive mating surface should be used with ThorPlas-Blue.
- February 09, 2016
Case History #ST091 – A Chemical Processing Plant Success Story
BACKGROUND INFORMATION
- Location: USA
- Industry: Chemical Processing
- Plant: Nitric Acid – Fertilizers
- Application: Shell & Tube Heat Exchanger
- Material of Construction: Zirconium
- Temperature: 232°C / 450°F
- Pressure: 10.3bar / 150psi Flange: Ø1651mm / 65”
- Previous Gasket: Fiber sheet gasket (exfoliated vermiculite)
- February 05, 2016
Parker's HNBR sealing compounds provide cost-effective solutions in aggressive EOG environments.
N1173-70, N1231-80 and KB163-90 are sealing compounds made from hydrogenated nitrile, a synthetic polymer that results from the hydrogenation of nitrile rubber (NBR). The hydrogenation process gives HNBR materials enhanced thermal stability (up to 149°C/300°F, with short periods at higher temperatures).
HNBR materials also possess superior mechanical properties and enhanced fluid compatibility over standard nitrile compounds. These properties allow HNBR materials to be a cost-effective bridging compound between nitrile and fluorocarbon elastomers.
- February 02, 2016
There’s a new generation of polyurethane on the market, courtesy of our friends at the German company Freudenberg Sealing Technologies.
It’s called 94 AU 30000 polyurethane, and it achieves much better results than other materials on the market due to its improved characteristics. It gives seals a high resistance to even hot water and lets them last longer than other seal solutions.
Among 94 AU 30000 polyurethane’s values to customers:
- High extrusion stability allows operating pressures up to 50 MPa/7250 psi.
- High tear resistance boosts operating life and resistance to wear.
- Stability in temperatures from -31 degrees F to 250 degrees F/ -35 degrees C to 120 degrees C.
- Outstanding with mineral and biodegradable hydraulic fluids.
If you’re interested in learning more about Freudenberg polyurethane materials, and about 94 AU 30000 polyurethane, download