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.
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.
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.
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| Pneumatic seals |
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.
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