Showing posts with label semiconductor seals. Show all posts
Showing posts with label semiconductor seals. Show all posts

Friday, 13 September 2013

Standard and custom made hydraulic cylinder seals


Pneumatic Seals are designed for low operating pressure. Pneumatic Seals are vital in machinery. Pneumatic Seals may be used for rotary and reciprocating motion. Common pneumatic seals include rod seals, piston seals, symmetrical seals, V-Rings, wipers, rotary shaft seals, wear rings, static seals, back-up rings, o-rings, buffer rings, u-cups and gaskets.

Pneumatic seals are any of a class of seals used in applications including rotary or reciprocating motions. They are often used in pneumatic cylinders and valves. Pneumatic seals require minimal lubrication when exposed to air in order to create a tight seal. Pneumatic seals may also be exposed to high operating speeds at which the pressure is not high. The difference between pneumatic seals and hydraulic seals is pressure. Pneumatic seals typically have a pressure range of 1 to 150 pound-force per square inch (psi), while hydraulic pressure can reach greater than 10,000 psi.

A typical Hydraulic seal consists of an integral PTFE ring and elastomer ring, providing the properties of an elastomeric ring with a rigid, low friction, Teflon coated (PTFE) working face. Hydraulic seals can have a variety of different cross sections. Hydraulic seals include shaft outer diameter or seal inner diameter, housing bore diameter or seal outer diameter, axial cross section or thickness, and radial cross section.

There are two categories for these industrial products. These are dynamic and exclusion seals. A dynamic seal is one that is used in order to separate a fluid from possible contaminants. It is utilized in order to put a gap between moving and non-moving surfaces like those found in piston ring applications. When considering dynamic seals, it is important to focus into a variety of dimensions like inside diameters, outside diameters, axial cross section, radial cross section and housing bore.

Exclusion seals are those that are used in order to separate contaminants from machine bearings. They remove any debris from moving shafts. These hydraulic seals can be sub-classified further into V-ring, scrapers and wipers. V-rings are those made out of rubber while wipers are those with lip seals that are flexible. Scrapers are those that contain scraping edges used in the process of removing contaminants from the bearings.

Darcoid Nor-Cal Seal is a leading distributor of hydraulic and pneumatic seals. Darcoid Nor-Cal Seal has been providing standard and custom-made hydraulic cylinder seals for a wide range of applications and industries for a long time as an industry leader and has been providing hydraulic and pneumatic seals for the Aerospace and Military markets where quality is of utmost importance.

Friday, 14 June 2013

Excellent Orings to suit the needs of its customers all across

Sealing requirements can be fulfilled with spectrum of options. The options vary as per specific usage. If you are facing problems with your sealing system, try O-rings sealing solutions and get the best of seals available. As different industries look for diverse variation, there are options to fulfill their demand. O-rings are the finest type available. These O-rings are known for their quality and superior sealing abilities.

O-rings are round shaped rings made out of elastomeric compounds that consists of natural or synthetic rubber. With innovative designing and impeccable engineering, Darcoid offers these excellent O-rings to suit the needs of its customers all across. This is because these are dependable, safe and long-lasting.

These O-rings are being widely in use in industrial sectors ranging from automotive to fluid power to semiconductor processing. O rings are generally being used in cars, construction equipment, heavy duty trucks, refrigeration and air conditioning components, commercial and military aircraft, pharmaceuticals, oil and natural gas rigs, kitchen and bath fixtures, surgical instruments, fuel handling equipment and drug delivery devices and many more applications.

Metal O-rings are the metallic variants of commonly used elastomeric O-rings. They are typically used in static sealing applications that are incompatible with the physical and chemical characteristics of elastomeric O-rings. These O-rings have high tolerance to radiation as well as high vacuum, and are generally used for flanged applications. Ideally, metal O-rings are placed in both open and closed grooves and axial pressure is applied between two parallel surfaces. Furthermore, grooves that hold the O-rings are designed to be perpendicular to the direction of the fluid flow. When placed between surfaces and compressed to a predetermined height, deforms and creates contact between the jointing and sealing faces. Inherently, O-rings' metallic elasticity displays a reasonable deflection and creates maximum sealing contacts during operation to ensure the sealing action. In addition to elastic deflection of the metal, structural builds of the O-rings also play an important role in creating the sealing force. Although most metals can be used for manufacturing metal O-rings, the choice of metals should be such that the linear expansion co-efficient of the O-ring metal varies slightly from the linear expansion co-efficient of the metal of jointing surfaces. Metal O-rings are vulnerable to rusting unlike elastomeric O-rings, and as such, are coated with a suitable material to avoid rusting. This material is softer than the base metal and serves an additional purpose of negating the effect of surface abnormalities. The coating materials that are typically used are soft metals, such as silver, and non-metals like PTFE.

Whether it's the flow of liquid or air, O-rings are exceptionally effective in making the seal highly efficient. The quality of the seal plays a pivotal role and the manufacturers must take extra care while choosing the raw materials and production techniques. With high tech solutions and advanced methods, the kind of sealing devices from Darcoid Nor-Cal Seal are immensely satisfactory and offer desired results every time the product is used for varied industrial usage.

All industries right from mechanical, automotive, pharmaceuticals, and many more choose O-rings for their usability. With years of experience and first rated facilities provided by Darcoid Nor-Cal Seals, their O-rings have witnessed tremendous rise in their popularity. The O-rings are the most preferred options for engineers across the world for all their sealing needs.

Friday, 17 February 2012

Ultimate Sealing Solutions for your Machinery


For all types of machinery to perform best, certain supporting accessories are necessary. The basic reason for using a range of machinery accessories like different varieties of polymers, gaskets, adhesives, molded shapes, thermal products, rubber seals, sealing products, O-Rings, dynamic seals, semiconductor seals, composite seals, rubber gasket seals, medical components, sanitary and hygiene seals and a few other such rubber materials is to prevent friction and leakages and also for an ace performance enhancement of your machinery.

Rubber rings and rubber seals, which are made of natural rubber or synthetic rubber, are basically mechanical seals which are used in static as well as dynamic sealing applications, in various industries like automotive, aerospace, construction etc. These seals are widely adopted in various applications because of features like resistance to aging, flame retardation ability etc.

O-Rings from the house of Darcoid are a kind of rubber seal circular rings. O-rings are applied in the static seal and the alternating motion seal. If it is used in the rotating motion seal, it will be limited by the seal equipment with low rotating speed. As different industries look for diverse variation, there is an array of options to fulfill their demand. Parker O-rings are the finest type available in the market. They are known for their quality and superior sealing abilities.

Parker Back-up rings are the most common anti-extrusion devices in dynamic sealing. They provide simple solutions to safely increase system pressure or solve an existing seal extrusion problem. Back-up rings function by positioning a more robust material adjacent to the extrusion gap, taking the seal’s place and providing a barrier against high pressures. Projects that involve heavy machinery and equipment usually involve mechanical seals in the process. Vacuum face seals are another important kind of seals offered by Darcoid.
Darcoid also provides a range of rubber sealing rings which are of great help in reducing friction and improve the service performance of your machinery. Extruder seals are used to seal lengths of sections of a selected type of plastic resin. There are a number of extrusion techniques available such as co-extrusion, offset extrusion, oriented extrusion, overcoat extrusion, cold extrusion, ram extrusion and much more.

Rubber is an indispensable product and is used in modern industry and industrial machinery. Industrial Certain rubber products which are supportive to the functioning of machinery, are mostly used for industrial purposes.

Rubber gaskets and seals the accessories that are used in many industries such as, mechanical engineering, aerospace, automotive and the plumbing industry for many kinds of sealing applications. Many rubber manufacturers are into production of these supporting accessories for machinery by Darcoid Nor-Cal Seals, a rubber manufacturer, who is into manufacturing of rubber accessories is on the fringe to win the brawl, to emerge as the world leader among ace rubber manufacturing companies.