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

Displaying 1 - 20 of 52 stories.
November 1, 2014
This letter is in reference to the article, Forces Acting on a Gasket [ Chem. Eng. October, 2014, p. 32a]. I need to clear my understanding on the seating stress required for the proper sealing. As per the article, seating stress for the proper sealing is indicated [see Equation (4) in the article]. This formula provides the total/maximum bolt loads on the gasket, which can be applied for the selected bolt...
November 1, 2014
Figure 1.  During tightening, hydraulic pressure load within a bolt should be uniformly and accurately applied to avoid gasket damage and other issues that can create leakage Common knowledge dictates that planning ahead ensures effective results, regardless of the task at hand. Controlling the process is essential to controlling the outcome. Operations in the chemical process industries (CPI) require...
October 1, 2014
Gaskets are relatively simple pieces of equipment in principle, yet are entirely critical in many types of chemical process industries (CPI) applications, including pipes and vessels. An understanding of gasket function, and of the forces and stresses acting on gaskets provides a basis for decisions on gasket types and materials. Functions and types Acting as a retaining seal between two rigid stationary...
September 1, 2014
This company has launched a new generation of dry-running shaft seals for agitators. In addition to the known benefits of this type of mechanical seal, the new SeccoMix1 is also silent running and has been...
June 1, 2013
Ongoing advances in the design and use of dry gas seals (DGSs; [ 1]) — as an alternative to traditional oil-lubricated wet seals [ 2] — have helped to improve the reliability and efficiency of compressors throughout the chemical process industries (CPI). One of the major design considerations in mechanical seals is how to protect seal faces from wear, as one face rotates close to a static face...
April 1, 2013
Avoid pipe corrosion with this spacer Trelleborg Group Flexspacer has been developed to effectively create an air gap between topside pipelines and thermal insulation, thereby avoiding the corrosion that can occur when using traditional insulation systems such as mineral wool. By stopping direct contact between the insulation and the pipe, Flexspacer prevents any damage to the corrosion protection on the...
August 1, 2012
Sometimes the smallest parts — such as seals and gaskets — can have the greatest impact on plant performance. For this reason, seal and gasket manufacturers are developing innovative new materials and designs that will help these diminutive, but important, components stand up to the harsh operating conditions of the chemical process industries (CPI). “With multiple seals and gaskets...
August 1, 2012
Transfinity elastomer composite products specifically are designed for use in anti-vibration applications. These products provide elastomer compound formulators the flexibility to control damping levels and achieve the highest levels of...
February 1, 2012
This all-metal, free-running, self-energizing reusable locknut is manufactured in stainless steel (303, A286 or 90) and 95% Ni stainless-steel alloy and is suitable for protecting and preserving bolts, studs and...
September 1, 2011
The chemical process industries (CPI), like many others, increasingly employ non-metallic piping systems for fluid transfer — including polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC) and fiberglass-reinforced plastic (FRP) — instead of exotic metal piping. While non-metallic piping systems have benefits, such as lighter weight and easier installation, they pose a challenge with...
September 1, 2011
Metcar mechanical seal rings and seal faces are manufactured using highly engineered carbon-graphite materials for demanding high-speed or high-load applications. The seal rings are ideal for sealing liquids, such as water, hot water, acids...
May 24, 2011
The Thermiculite family of products for seals and gaskets offers a cost-effective alternative to industrial seals where resistance to high heat is critical. Thermiculite...
March 28, 2011
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...
March 28, 2011
Effective from – 100 to 600°F and capable of sealing liquids up to 10,000 psig and gases up to 3,000 psig, the PLS 2 thread and gasket sealer formula...
March 28, 2011
Specially developed for the specific applications of mechanical seals, the Diamond Faces crystalline diamond layers promise excellent...
March 28, 2011
Suitable for use in lift and steering cylinder applications, the HDR-2C Bi-Component Polyurethane Rod Seal (photo) combines two materials into a one seal offering improved flexibility at low temperatures (down to...
March 28, 2011
The Meco shaft seal (photo) is offered fully split, allowing for simple retrofitting without the removal of bearings or drives. The seals promise an alternative to packing glands in applications — such as blenders and mixers — wherein dry powders...
March 28, 2011
Available in galvanized steel, stainless steel and brass, Nilos rings (photo, p. 64) safeguard ball and roller bearings from the corrosive effects of abrasive particles and debris. The rings can be specified in a wide range of sizes...
March 28, 2011
Intended for fragile, glass-lined and large-diameter equipment, the Series 600 gasket tape (photo) consists entirely of multidirectional-strength, expanded polytetrafluoroethylene (PTFE). The tape is capable...
March 28, 2011
This firm has synthesized two advanced fluoroelastomer (FKM) materials, Resifluor 500 and Resifluor V8T41, as sealants for oily and greasy substances. The FKM materials offer superior high-temperature water...
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