Thursday 27 September 2012

High quality PTFE seals


With the invention of PTFE, it is of great significance for the industry, because it solves a lot of problems in the chemical sector, oil industry and pharmacy industry. It has been widely used as the main sealing material and filling material. PTFE is a kind of synthetic polymer material. The main base of PTFE is carbon atom. And the fluorine atom is evenly distributed around the carbon atom and forms the compact protective screen. Therefore, PTFE has the very excellent physical mechanical property. It can not only resist the strong acid, strong alkali and strong oxidant but also can bear high temperature. To some degree, its property surpasses the property of glass, ceramic, stainless steel and gold. Its working temperature ranges from-100 to 100 Celsius degrees.
As a kind of sealing material, PTFE is applied by different ways. The good corrosion resistance, stable physical property and temperature endurance make contribute to its excellent sealability. As a result, it is very applicable in the following industries, such as oil, chemical, electric and steel. The applicable media are also in a wide range, including water, oil, acid liquid and other chemical liquid. PTFE seals are typical applications for the PTFE material. As its name implies, PTFE seals are made through cutting the PTFE rod, pipe or plate. The main material is PTFE and so this gasket naturally inherits all features of PTFE. It includes flat gasket, V-gasket, piston ring and ball valve gasket.
PTFE seals
In terms of machinery, you really cannot take chances with performance, as a lack of it will certainly reflect badly on manufacturing methods. Whether you're isolating vibration in industrial machinery or creating products for another industry, maintaining your reputation for quality is of paramount importance. In addition, you'll find that using the highest quality rubber components in your products will help increase your reputation. When your customers know they can count on your products, a long-term relationship can be founded, which is an essential consideration for growth and profitability.
Darcoid Nor-Cal Seals is an enterprise that is globally renowned as an endeavor that is into delivering top quality accessories for diverse machinery. Darcoid Nor-Cal seal is a global platform in the industry of mechanical equipment related parts. Darcoid Nor-Cal Seal is the company that is an authorized distributor of the Parker Company and so has the option of taking orders from various consumers along the global arena. This endeavor also hosts a horde of special and high quality Machine and Molded Teflon seals like Piston Seals, PTFE seals, Buffer Seals, Seat Seals, Scrapers, Valve Seals and V Packings for various industry requirements like Aerospace, General Fluid Power Industry, Food and Beverage Industry Equipment and Pharmaceutical and Medical sector.

Friday 21 September 2012

Special Die cut gaskets

Die cut gaskets
Gaskets are materials that seal between two different surfaces, under compression. The sealing is a result of the compressive forces created by sufficient bold load, and also works to fill the imperfections on the mating surfaces to be sealed. Gaskets and seals have always been an integral part of Darcoid Nor-Cal Seal. Gradually, Darcoid's die-cutting capabilities have grown alongside technology, helping them render cutting edge products. Darcoid has the knowledge and expertise to meet your gasket and die-cutting needs, whatever they may be. Darcoid has manufactured for a large variety of high volume applications for quite some time now. The unique process for producing precision extruded and die cut gaskets provides customers tremendous latitude in design flexibility, and eliminates tooling charges for any ID/OD combination from .030" to 19.000" outside diameters.

Darcoid's seals are made with only "sealing grade" material formulations with the highest possible percentage of polymer for the most effective long-term sealing solutions. Extruded and die cut products are usually supplied as ID/OD tubing type cross-sections, but can also be supplied in a variety of different cross-sections such as square, rectangular and triangular. Custom cross-sections are also available are also delivered by Darcoid Nor-Cal Seals. Temperature is possibly the most important factor in choosing a gasket material. When higher temperatures at the gasket joint need to be sealed, the potential choices are quickly eliminated. If the system operating temperatures approach a gasket materials max. continuous operating temperature threshold, the next best material should be chosen.

Chemical compatibility to the media to be sealed against (including flushes and system cleanouts). There are many different fluids and gases to seal against, and many different choices of gasket materials to seal against them. The internal pressure of the fluid should be a determining factor in choosing a gasket sealing material. If severe cycling or pressures changes occur frequently, a more robust material may be required. Application of this includes all factors such as the number, grade and size of bolts to create compression and the surface areas of the sealed joint. For EMI gaskets, this includes the amount of EMI and RFI shielding required. Darcoid Nor-Cal Seal's die cut gaskets and seals offer long term sustainability, excellent wear performance, complete material traceability and easy installation.

Thursday 13 September 2012

Quad rings dynamic sealing configurations

Quad rings - Darcoid
Quad Rings, also known as X-Rings, can be used in a wide variety of static and dynamic sealing applications. The four-lobed design provides twice the sealing surface in comparison to a standard o-ring.The double-seal action requires less squeeze to maintain an effective seal.This reduction in squeeze means less friction and improved seal life. Quad Ring parting lines are between the lobes, away from the sealing surface, thus eliminating the problems of leakage often resulting from a parting line's irregular surface as found on an O-Ring.
Quad Rings are designed to outperform a standard O-Ring in rotary seal applications.The four-lobed configuration creates a more stable seal avoiding spiral twisting.This allows the use of a more narrow groove width than a standard O-Ring groove, but can also be used in a standard O-Ring groove. To minimize breakaway friction, an O-Ring groove must be wide enough to allow rolling or twisting of the seal. In the long stroke of a reciprocating seal application, this twisting action can strain and eventually tear the rubber, causing a failure mode known as spiral twist.
To prevent spiral twist, a Quad Ring seal's four-lobed configuration is designed to withstand the distortion and extrusion often caused by high or pulsating pressure. To accommodate these forces, a Quad-Ring seal uses a narrower groove than a comparable O-Ring seal. The four lobed seal design not only provides lower friction than an O Ring, but also, due to its square cross section, it resists spiral twist. ` Quad rings can be used for Static and Dynamic applications. In case of static application Quad rings are fitted in the assembly where there is no dynamic movement. Whereas, with a dynamic sealing configuration, quad ring in an internal groove should be stretched over the root of the groove. With external grooves, Quad ring is installed in compressed state.
What's more, a lubricant reservoir formed between the sealing lips improves performance at start up. Their 4-lobe configuration also helps to eliminate the seal from twisting in the groove causing premature failure. Quad Rings can be used in a wide variety of static and dynamic sealing applications. With the unique 4-lobe configuration, Quad Rings have 2 sealing areas per side as opposed to 1 sealing area on an O-ring. Quad Rings are available exclusively from the house of Darcoid Nor-Cal Seal.


Friday 7 September 2012

Teflon seals and its capabilities

The Teflon Seals, as the title suggest are usually back again ups to prevent bulge in rubber o-ring securing methods. This is a common phenomenon regarding rubber o-rings to extrude especially with current smooth systems which are a variety of large difficulties and high temperatures. And also this is really a circumstance in which the o-rings enjoy a substantial part in stopping o-ring extrusion.

These types of Teflon seals are perfect to use as aiding seals with part programs specifically in the particular Region Common AS-568A Uniform Numbering System. We all assure an individual from the level of superior of these forms of O-rings, as they are already successfully accepted simply by simply smooth systems creative developers because of its added flexibility in proportions selection.

These types of kinds are apt for use in securing systems that are often subjected to severe responsibility cycles, or perhaps where difficulties go beyond 3,000 pressure unit and also temperature ranges tend to be over 275 diplomas Fahrenheit.

Putting aside the above, Darcoid furthermore supplies custom made Teflon seals as well as back-up or supportive accessories. This really is so that you can cater to the clients who have specs for specific requirements.

Darcoid Nor-Cal Seal furthermore hosting companies the group associated with unique and also top quality Device and Shaped teflon seals just similar to Piston seals, Buffer seals, Seat Seals, Scrapers, packaging industry requirements in industries like Aerospace, General machinery, Food and Beverage Industry Products and also Pharmaceutical drug and Health-related sector.

Darcoid Nor-Cal seals can be a top supplier associated with custom made Teflon goods supplying total features in Teflon elements manufacturing which includes seals, gaskets, rings or any other required customized designs.