AccountGuest Edition My Account My Log In

Archives :: Processing & Handling :: Liquid, Gas and Air Handling :: Seals, gaskets & packing materials

Displaying 21 - 40 of 48 stories.
March 28, 2011
In addition to both threaded-pipe and flanged connections, sterile, standard-compliant connections for instruments are now also possible in the form of a clamp connection (DIN 11 864-3). The standard...
March 28, 2011
A a new diamond coating for mechanical seals has been introduced that offers excellent protection against wear during dry running, in applications with mixed friction and under exposure to abrasive media...
March 28, 2011
These seals (photo) are available fully split to retrofit mixers, blenders and most other rotating bulk process equipment without the removal of bearings or drives. The seals work like...
March 28, 2011
For safe operation of a flange joint, it is important to consider a number of parameters that have an impact on the bolts, gasket and flanges. The relatively large number of mathematical...
March 28, 2011
Allseal consists of an opto-electronic sensor that detects wear of the mechanical seals as soon as it begins and immediately warns the operator of any leaks. The system instantly detects if a liquid escapes around the...
March 28, 2011
A new low-emission valve stem spool packing delivers emissions performance of <20 ppm average leakage. Two unique types of graphite packing comprise the new style...
March 28, 2011
Precision Polymer Engineering Detectaseal (photo) is a new, FDA-compliant, metal-detectable elastomer designed to help food companies reduce the risk of rubber contamination...
March 28, 2011
The Model 999.30 diaphragm seal is available in combination with an intelliGauge Series mechatronic pressure gauge (photo). The diaphragm seal is...
March 28, 2011
Cartex GSDN bi-directional gas-lubricated seals can be used to standardize new centrifugal pumps or recondition existing pumps that have conventional stuffing-box packings or liquid-lubricated mechanical seals. The characteristic design feature of the...
March 28, 2011
Zhejiang Dongxin Seal This firm specializes in the development and manufacture of silicon carbide, carbon graphite, hot-press graphite and other materials for sealing systems...
March 28, 2011
SEPROnet is an online program that allows customers to document and evaluate seal-related data and is built on this company’s in-house SEPRO service software program that maps seal data for...
June 1, 2010
Containing fugitive emissions of volatile organic compounds (VOCs) and hazardous air pollutants (HAPs) is a challenge to the chemical process industries (CPI). It has been estimated that these industries account for half of all fugitive emissions, and 60% of these emissions are the result of valve stem leaks. In addition to environmental benefits, effectively containing these emissions can yield...
February 1, 2010
Results of 12-mo immersion tests in biodiesel and bioethanol of a range of elastomer polymers typically used in fuel-handling equipment show that the seals are prone to significant swelling, which leads to failure in valves and other equipment, according to Precision Polymer Engineering Ltd., (PPE; Blackburn, U.K.; The swelling is caused by increased acidity of the biodiesel due...
June 1, 2009
Figure 1.  Style 212-ULE valve stem packing is said to outperform engineered sets, meeting global emission standards Garlock Sealing Technologies Figure 2.  The EnDura family of seals was developed to cope with temperature extremes, increasing pressures and higher levels of hydrogen sulfide in the oil and gas industry Precision Polymer Engineering Chemical processors rely on seals and gaskets to...
January 1, 2009
Frequently, in chemical processing equipment it is possible to place the shaft support bearings in the chemical that is being processed. In some cases, this precludes the use of oil- or grease-lubricated bearings because the operating conditions are not conducive to the use of such materials. For example, bearings that are lubricated with oil or grease can be problematic when submerged in liquids such as...
December 1, 2008
Lubricant contamination in gearbox bearing housings can substantially reduce gear life. In critical applications, dual-face, magnetic bearing-protector seals will keep contamination out (Figure 1). Dual-face, magnetic bearing protectors are preferred in many difficult applications, such as wet cooling tower gearboxes, while advanced rotating labyrinth seals are more universally applicable. Both users and...
June 15, 2008
In Poorly Lubricated Conditions, Try this Diamond Seal... Over 50% of pump lifecycle costs result from energy and maintenance; and applying the low-wear and low-friction attributes of diamond to mechanical seals can yield significant energy savings for fluid pumps. Ultrananocrystalline diamond (UNCD) seals provide the benefits of diamond at expenses comparable to silicon-carbide (SiC) face seals. In tests...
April 15, 2008
Packed Columns [1] A packed column is a vertical, cylindrical pressure vessel containing one or more sections of a packing material over whose surface the liquid flows downward by gravity, as a film or as droplets, between packing elements. Vapor flows upward through the wetted packing, contacting the liquid and facilitating absorption of the vapor into the liquid. Packings are offered in either random or...
April 15, 2008
Advanced Diamond Technologies, Inc. (ADT; Romeoville, Ill.; has launched a new family of mechanical seals to improve efficiency, save energy and reduce costs in fluid-pumping systems. The patented UNCD (ultrananocrystalline diamond) Seals provide the benefits of a diamond at a cost comparable to silicon carbide face seals, according to ADT, which was formed in 2003 to...
January 15, 2008
Knowing the options in fluid-circulation designs helps in the selection process Over the past few decades, hundreds of seal geometries and a fair number of seal categories have evolved. Recently, the distinction between single- and dual-mechanical seals has been brought into focus by heightened safety and environmental concerns. Dual seals are often selected where safety is of paramount concern. To aid in...
Pages: « Previous  1 [2] 3 Next »

Get more from
Get email updates in your inbox


Subscribe to:
Chemical Engineering Magazine

Chemical Engineering Magazine and Archives

Plant Cost Index

Join us on... Twitter LinkedIn

LinkedIn Groups

Our LinkedIn group is now over 28,000 members strong!

  1. Join other CPI professionals from all over the globe and share best practices, expertise, concerns and more.
  2. Provide feedback to Chemical Engineering Editors

Current members represent Worley Parsons, DuPont, SABIC, Fluor, Air Products, LyondellBasell, Nalco, Dow Chemical, Dow Corning, BASF, Jacobs Engineering, ExxonMobil, Shell, Chevron and more.

Join Now

We also offer the following subgroup for more targeted discussions:

Search the Buyers' Guide

Plant Cost Index

Facts at Your Fingertips (archive)

Ask the Experts

Back Issues
To access this area, please log in or create an account.
Forgot your password?
Request it now.
Live chat by BoldChat