gasket
- September 02, 2021
Compressed non-asbestos gasket materials are subject to a natural aging process, like all elastomer-containing materials. This process depends on the kind of elastomer, its vulcanization system, and the storage conditions. Unfavorable storage conditions such as extreme temperatures, exposure to sunlight, low humidity, etc. can lead to a premature reduction of the material’s quality.
This blog will outline the conditions for proper storage of compressed non-asbestos gasket materials. These should be followed in order to achieve an optimum shelf life of 5 years...
- August 20, 2021
CHALLENGES FACED BY CUSTOMER
The customer’s chemical treatment vessel has nonstandard rectangular flanges with a limited number of bolts. The limited bolting resulted in inadequate compression to seal the gasket and the non-standard shape made the use of a molded engineered gasket unfeasible. When tested, expanded PTFE leaked. There was no alternative known at that time so the mess of crystalized leaking media was accepted as normal.
OPERATING CONDITIONS AT CUSTOMER FACILITY
- Temperature – 86°F (30°C) - 104°F (40°C)
- Application – Custom rectangular flange
- Media – Dilute Caustic Soda
- Pressure – 50 psig (3.5 bar-g)
- July 30, 2021
Sheet materials are sold in a wide variety of material types and thicknesses, with the best choice for any given application being entirely dependent on the nature of the task the gasket will be performing. In this blog post, we’ll look at some of the different types of gasket sheet types and provide a high level overview of the best applicable uses.
All materials offered for fabricated gaskets can be purchased as whole or partial sheets from Gallagher Fluid Seals. All gasket sheet materials are in stock, and can be shipped within 24 hours.
The compressed,
- April 07, 2021
High temperature gasketing excels in the harshest conditions—intense heat and high pressure. These high performance gasket materials have been laboratory tested for fire safety. They maintain an effective seal during pressure and temperature fluctuations, and their excellent torque retention lowers leakage rates and reduces maintenance time.
This blog post will examine the five types of high temp gasket material that GFS carries from Garlock and Thermoseal Klinger.
- Garlock Style 9800
- Garlock Style 9850
- Garlock Style 9900
- Garlock Therma-Pur 4122-FC Ring Gasket
- Klinger PSS High Temp
- February 10, 2021
This blog will discuss the differences between ASME flanges and AWWA flanges and the gaskets associated with each.
ASME flanges are the most widely used and specified flanges throughout industry in North America. Flange sizes ½” through 24” fall under ASME B16.5 and flange sizes 26” through 60” fall under ASME B16.47. Within ASME B16.47 there are series A and series B flanges, with the noticeable differences in most cases being the bolt size and/or bolt quantity.
- January 08, 2021
It's a known fact that many facilities' sealing costs are higher than they need to be due to the plethora of materials and products used. One way to reduce costs is through standardizing the gasket material used in a facility. By simplifying the processes related to the procurement, maintenance, and inventorying of gaskets and seals, this can aid in the reduction of overall cost.
Saving the Sealing Spend
Mechanical seals, gaskets, O-rings, and packing can constitute a significant portion of a facility’s spend on sealing products. With respect to gaskets, the proliferation of different materials, different suppliers, and the applications they serve has led to complexity in the gasket selection and procurement process. So what do these costs involve? Gasket testing, evaluation and selection, procurement, inventory carrying and management,
- December 22, 2020
KLINGER® Graphite Laminate PSM
The pure graphite gasket material with a stainless steel tang insert
KLINGER® Graphite Laminate PSM has a 0.1 mm thick perforated stainless steel insert. The insert aids material handling properties and also increases the blow-out resistance. The insert is mechanically bonded to pure exfoliated graphite and therefore does not rely on adhesive.
Stable physical properties over the whole temperature range. KLINGER® Graphite Laminates PSM is suitable for hot water and steam at high temperatures up to 842°F (450°C).
In order to prevent the gasket material from sticking to the flange surface (even at high temperatures), the graphite surface can be given a non-stick coating at the customer's request. With this process, the gasket material's surface is coated and not impregnated.
- November 11, 2020
Understanding the Difference Between Gasket Types
As 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.
- September 08, 2020
Fiber Reinforced Plastic (FRP) pipes and flanges are increasingly used in the oil and gas industry where metal is simply too heavy and expensive. In addition to cost pressure, the need for lightweight chemically resistant materials are also driving the use of fiberglass pipes and flanges. Innovations in FRP flange design coupled with improvements in manufacturing technology have allowed FRP piping to be used in even more demanding applications. However, these demanding applications have added challenges for sealing the bolted flange connections.
More aggressive media and higher internal pressures have pushed the limits of the commonly used rubber gasketing materials, such as Nitrile Butadiene Rubber (NBR), Ethylene Propylene Diene Monomer (EPDM), or neoprene. Obtaining a reliable seal in FRP flanges using conventional gasketing materials has become more difficult.
Fiberglass pipes are generally known to have strength limits and a lower pressure resistance, making sealing fiberglass flanges difficult. Gore solved this problem with its patented expanded polytetrafluoroethylene (ePTFE) gasket, specifically designed to seal flanges at low stresses. This solution was successfully demonstrated in a multistage testing procedure conducted in cooperation with a globally leading manufacturer of anti-corrosive fiberglass pipe systems.
- August 05, 2020
So you spend hundreds or even thousands of dollars every year on sealing solutions, like gaskets. But did you know that the way you store your gaskets could affect the effectiveness or life span of your gaskets? In this blog, we offer some tips for gasket storage and shelf life which, if followed, can help ensure that your gaskets are always ready for service.
Gasket Storage and Shelf Life: General Storage Principles
Rubber gaskets should always be stored in a cool location which is free from excessive humidity, direct sunlight, and the presence of chemical vapours or fumes. The storage location should ideally be indoors and free from exposure to the elements or inclement weather. If the storage guidelines given below are followed, rubber gaskets or gasketed components have the following expected shelf life:
Tips for Gasket Storage and Shelf Life
Tip #1: Limit exposure to light
Sunlight and strong artificial light can degrade some gasket materials. For this reason, rubber gaskets should be stored in cartons or opaque bags which prevent direct exposure to light.
Tip #2: Maintain relative humidity levels
Very moist or excessively dry conditions in a storage location should be avoided. Relative humidity levels below 75% are recommended for most rubber gaskets. Similarly, very low humidity levels which can cause some materials to dry out and become brittle should also be avoided.