HALLITE PISTON SEALS PDF

Hallite offers a wide range of single- acting piston seals that provide the. The Hallite 15 rod seal has been well proven in many applications . Single Acting Piston Seals. Hallite is a leading global manufacturer and distributor of fluid power hydraulic and pneumatic seals, wiper seals, o-rings, rod and piston seals, bearings and.

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Hallite Double Acting Piston Seals

Double Acting Piston Seals. Company Factsheet Nature of Business Retailer. Rod Seals The rod seal is the most critical seal on any type of fluid power equipment preventing leakage of fluid from within the cylinder to the outside. Excessive leakage through the rod seal can reduce equipment performance, and also in extreme cases can cause environmental issues.

Small amounts of leakage on the rod are cosmetically unattractive, and in many applications are becoming increasingly unacceptable. Hallite offers a wide range of hydraulic rod seals for both single-acting and double-acting systems.

Hallite – Double Acting Piston Seals

These include a unique profiled NBR energised polyurethane PU seal, and a specifically designed three element seal for the mining industry comprising of an O-ring energiser, PU shell and a polyacetal anti-extrusion ring.

Particular attention should be paid to pair the rod seal and the wiper for the best sealing performance. If a less halpite rod seal is paired with an aggressive wiper, the wiper can scrape off the microscopically thin film of oil that remains on the rod in microscopic seqls imperfections during the return stroke, resulting in system leakage.

Single Acting Piston Seals Piston Seals or Piston Rings are used in hydraulic cylinders for fluid sealing and are designed to ensure that pressurised fluid does not seala across the cylinder head as the system pressure pushes the piston down the cylinder bore. The choice of piston seal is decided by the way in which the cylinder operates. For a cylinder which is halljte single-acting, capable of sealing dynamic pressure from one side unidirectionalit is always best to choose hallife type of seal designed to provide optimum sealing qualities for single-acting functions.

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The best sealing capacity of a double-acting cylinder, capable of sealing dynamic pressure from both sides bidirectionalis eeals by choosing a double-acting seal. A piston design where two single-acting seals on the piston for a double-acting cylinder are used can easily give rise to a breakdown. The reason is that a very high pressure can be trapped between the seals.

Piston seals, both single- and double-acting, can be designed for and used with integrated or separate back-up rings and guide rings.

Hallite offers a wide range of piston seals that provide the ultimate in leakage control.

Double Acting Piston Seals Piston Seals or Piston Rings are used in hydraulic cylinders for fluid sealing and are designed to halite that pressurised fluid does not leak across the cylinder head as the pistom pressure pushes the piston down the cylinder bore. Vee Packing Service Vee pack sets are multiple-lip chevron seals, usually composed of a male and female adaptor and a group of three or five vee rings, are popular for sealing rods and pistons in medium to heavy duty applications and are compatible with ha,lite single and double acting cylinders.

Wipers Wipers are installed in the sealing configurations of hydraulic cylinders to prevent contaminants such as dirt, dust and moisture from entering the cylinder as they retract back into the system.

Hallite Piston Seals

Contamination can cause significant damage to the rod, cylinder wall, seals, and other components, and is one of the primary causes of premature seal and component failure in a fluid sealx system. The wiper seal is the hallitw undervalued seal type in the hydraulic cylinder in relation to its important function. Particular attention should be drawn to its selection, the surrounding environment and service conditions must also be taken into special consideration.

Bearings The function of the Bearing or wear ring is to guide the piston and piston rod of a hydraulic cylinder, as well as to withstand arising side loads.

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At the same time, it prevents any metal-to-metal contact, which will damage and score the surfaces and eventually cause seal damage, leakage and component damage. Hallite offer bearings in various types of materials all of which offer high wear-resistance and demonstrate excellent friction properties. Our T63 polyacetal wear ring is suitable for both fluid and pneumatic cylinder applications, the T87bronze filled PTFE bearing is suitable for higher temperature applications.

A glass filled nylon wear ring T offers high bearing load capacity over a broad range of temperatures, whilst our high strength nylon bearing T is suitable for telescopic applications.

The T, which is a woven fabric reinforced polyester resin bearing is available in three forms, cut halllite, spiral lengths and flat coils, and is compatible with a wide range of fluids, and is used extensively in mining applications. Unitized Pistons The Hallite Type is a ready to fit complete piston.

Hallite – Single Acting Piston Seals

The steel piston has a non-metallic bearing material moulded over the outer diameter using a special proprietary process. It is then finish machined to provide a tight tolerance with the bore of the tube and also for the installation of the chosen seal.

Originally designed and patented by Hallite Seals over 25 years ago, the Unitized Piston continues to establish and develop itself as a unique solution for our customers many and varied applications.

An accepted solution for Construction, Off Highway and Agricultural cylinders, the Unitized Piston provides the OEM customer with proven extended service life whilst significantly reducing manufacturing and assembly costs.

Produced today in a wide range of sizes, bearing and seal materials, Hallite’s exclusive Unitized Piston ipston available off the shelf in numerous standard metric and inch sizes. Swivel Seals Swivel seals are designed for slow rotary applications, such as the hydraulic swivels, which allow the transmission of pressurised services between the chassis and body of mobile hydraulic equipment. Mobile Number Please enter Mobile Number. Please enter full name. Please enter Mobile Number. Please enter your Email ID.

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