Standard and custom made lip seals

Darcoid Nor-Cal Seal has been providing standard and custom-made lip seals for a wide range of applications and industries for a long time as an industry leader and has been providing lip seals for various applications where quality is of utmost importance. A lip seal is nothing but a rotary seal incorporating a deflected lip seal geometry. Anti-rotational devices such as flanges and Orings are often utilized to prevent the seal from rotating along with the shaft. Lip seals are suitable for sealing corrosive and abrasive media. A wide range of geometries and materials are available, depending on specific application requirements. Lip seals are often used on motors and compressors and other components with high speed rotary shafts for their ability to resist extreme pressure.

The most common lip shape is the chamfered or back-beveled design and is available with the V and C Series spring types. This design allows for ease of installation and permits lubrication to nest under the lip and feed through in reciprocating dynamic applications. The result is a microscopic film of lubrication that increases seal and hardware service life. Since contact point of a chamfered lip is a single point, all of the sealing force is concentrated on that point, yielding the highest sustainability and lowest friction.

Lip seals

Applications often involve media with abrasive particles that can get caught between the seal lip and the mating hardware. This increases wear and tear to both the seal and the mating surface. To prevent particles from accumulating, the scraper lip design is available with all three spring types. The scraper lip contact point is positioned directly over the load point of the spring in each design for maximum scraping action. The scraper lip can be positioned on the ID, OD or both. The scraper lip also stays in place better in a stepped gland where the step is not very large.

The beaded shape contacts the surface in much the same way as an O-ring, and is available with the V and H Series spring types. Similar to the chamfered lip, it is easy to install and helps to lubricate the reciprocating sealing surface. In fact, the beaded lip yields a film of oil that is slightly thicker than that of a chamfered lip, making it advantageous for applications with rapid reciprocating motion. Standard and custom of lip seals sizes are available with a wide selection of PTFE materials. Darcoid Nor-Cal Seal is an excellent supplier of lip seals. Darcoid has on offer a wide range of products. With Darcoid, which has experience in various areas of expertise, you can be rest assured that your own rubber components will be manufactured to exacting specifications, by experienced professionals.

Different types of hydraulic seals

Hydraulic seals

Hydraulic seals are products that include types such as rod seals, flange packing and U-cups. They are specifically designed for applications that require high pressure such as those of hydraulic cylinders. It is said to have a wide array of orientations and different types. Before going further into the orientation and types of hydraulic seals, here are some things to consider when purchasing such industrial products. The diameters of the outer shaft, inner seal and housing bore should be specified. Thickness and radial cross section should also be included in the list of considerations. Service limits such as operating speed and pressure, vacuum rating and temperature should be dealt with accordingly. There are various sealing directions for hydraulic seals.

The first on the list is called a rod seal. A rod seal is a type of radial seal that is fit specifically into the housing bore. The sealing lip is found in contact with the shaft. The second type is known as the Piston seal. This is yet another type of radial seal and is a variation of the rod seal. Instead of the sealing lip found in contact with the shaft, the lip goes in contact with the housing bore. It is in the shaft where the seal is pressed accordingly. The other types of sealing orientations are symmetric and axial seals. A symmetric seal, as the concept implies, work symmetrical or equal to the rod and piston seals. The axial seal on the other hand, goes in contact or in axis with the housing component.

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 Seals is an endeavor that is into manufacture of sealing and other accessories for machinery.

Shielding Solutions for Wireless Communications through EMI Shielding gaskets

Emi shielding gaskets

Electro Magnetic Interference or EMI shielding gaskets have a wide scope for usage in various fields like aerospace, automotive electronics, computers, data communications, general electronics, medical equipment, military, network equipment, telecommunications and a wider range of industries, Darcoid Nor-Cal Seal, a world class endeavor provides electromagnetic interference shielding to more high-tech industries with global standards around the world.
Whether you need board-level EMI shielding gaskets, a Fabric-over-Foam gasket, or any of a growing number of innovations of traditional Electro Magnetic Interference solutions, Darcoid caters to all your sealing requirements. The EMI shielded gaskets and seals come in a wide range with their volume resistance in order to achieve the desired shielding effectiveness. Products are available as non-hardening caulking compounds, silicone or vinyl based sheets as well as conductive adhesives and coatings.

At Darcoid Nor-Cal Seal, the sealing accessories and aids are of a state-of-the-art quality leading to constant innovation of wares and introduction to new products and capabilities. Darcoid also caters the raw material for the making of Access Door Seals, Dynamic metal seals, Fastener and Fitting Seals, Gask-O-Seals, Integral Seals, Lock-O-Seals, Metal Seals, O-Seals, Pipe Flange Gask-O-Seal, Stat-O-Seals,Thredseal and more of similar type. Darcoid maintains industry leadership by offering innovative, high quality supporting accessories for your high-end machinery. The company has a comprehensive choice when it comes to adhesives and sealants with all different types covered. Darcoid has on offer a range of different variants of gaskets, sealants, adhesives, o-rings and thermal products and more, to pamper and tune up your machinery and it's efficiency with.

A break up into perfection of services, Darcoid paves into various divisions like Adhesives and sealants, composite seals, dynamic seals, EMI shielding gaskets and RFI shielding products, Extruded products, gaskets, medical components and equipment, molded shapes, O-Rings, Sanitary and Hygienic seals, semiconductor seals, sheet and roll stock, thermal products divisions. These divisions join to support darcoid in chauffeuring to the needs of various applications in various industries like the heavy machinery manufacturing units, computer accessories manufacturing units, performance driven applications such as orthopedic supports and the likes.

Get to know many facts about pneumatic seals

Darcoid Nor-Cal Seal offers several different grades and types of compounds for all your application needs. Pneumatic seals are used to restrict the escape of air or the entrance of foreign materials in a pneumatic application such as a cylinder. 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.

Pneumatic seals

A pneumatic seal's sealing orientation can be internal as with a rod seal, external as with a piston, symmetrical, or axial. With internal pneumatic seals, a housing bore surrounds the seal and the sealing lip touches the shaft. This seal requires very little lubricant. With external piston pneumatic seals, the seal surrounds a shaft and the sealing lip touches the housing bore. This system requires more lubrication. Symmetric pneumatic seals are the same on both sides, and axial pneumatic seals fit axially against the housing. In both cases, however, the seals are used externally and require more lubrication.
Rotary applications need only one pneumatic seal. This seal is considered to be single acting because it can seal in one axial direction while the application is moving. On the other hand, a reciprocating application requires two pneumatic seals, or double acting seals. In this case, one seal is needed for each of the directions. Double acting pneumatic seals are more complicated than single acting ones. Pneumatic seals can be single or double acting. Single acting pneumatic seals are used for one axial direction only. Pneumatic seals can be made of a variety of materials like Polyurethane, Nitrile, Viton, Silicone, EPDM and some PTFE. Sometimes, composite seals are used as pneumatic seals. Composite seals are seals composed of two or three different materials. Therefore, pneumatic seals are often found in products requiring one seal for many parts. Darcoid’s selection of products is the broadest offering in the industry for hydraulic and pneumatic sealing systems.