HydraPak offers all the necessary elements for virtually every seal application. The important functions of hydraulic seals includes preventing leakage, protecting the system from contamination and thus improving the life span of hydraulic systems. The softest -rings are 50 and 60 shore A and stretch more easily, exhibit lower breakout friction, seal better on rough surfaces, and need less clamping pressure than harder rings, For a given squeeze, the higher the durometer hardness of a ring, the greater is the associated friction. Multiple sealing lips. Available as single-acting and double-acting types, these seals can also be used with guide rings and back-up rings. Sealants, Seals, Gaskets and -rings are compulsories item for hydraulic components and systems. A rod wipers main function is to keep the rod and cylinder clean and free from foreign matter preventing premature failure. Also known as scraper seals, they are often used together with other sealing components to let a ram rod pass through the inner bore of a seal, while preventing leakage. And while we don’t perform cylinder repair, we do supply the seals necessary to replace your parts. Piston seals separate applied pressures between the piston and rod side during stroke movement and during the interim and final position. Wide range of materials available. The sealing force compensates for high-pressure to maintain a positive seal. Click here to view all types of Reciprocating Seals , specifically Hydraulic Seals or get in touch with an FTL engineer today using our live chat. Polyurethane has a high load-bearing capacity and because of this characteristic not only is it an ideal material for hydraulic seals but also for load wheels , heavy duty couplings, metal-forming pads, shock pads, expansion joints and machine mounts. Specifically, they seal the pressures during the stroke phase of the application. Mechanical, hydraulic & pneumatic seals feature multiple seal points, multi-lobed design, square cross sections & grooves on inside & outside dia. Piston Seals guarantee liquid or other media do not pass round the piston due to the system pressure pushing the piston down the cylinder amid a stress course. Rod wipers are used to clear dirt, debris and other contaminants from the rod so that the primary rod-sealing elements are protected. Rod Seals:These are used to prevent the leakage of lubricants from the cylinder. The Rod Seal is often the decisive factor for the function of the hydraulic cylinder in its entirety. Super Chemically Resistant Viton® ETP -Rings – Extreme Chemical Resistant Fluorocarbon provides significantly improved chemical resistance compared to standard FKM A type fluoroelastomers. Custom manufacturer of rubber, plastic & elastomer seals including hydraulic & pneumatic seals. Hydraulic fluid leakage continues to evolve as an important regulatory issue. The positive rake, lip profile provides an optimal amount of radial sealing load with minimal frictional resistance. It must ensure safe and leakage-free sealing under all system conditions, and at the same time it should produce as little friction as possible. Rod seals are vital to maintaining an efficient hydraulic system, as they are responsible for both preventing fluid leakage from within a hydraulic cylinder and protecting it against dirt and other exterior contaminates. The seal is obtained by means of the flared, flexible lips coming in contact with the rod or cylinder wall. Excluders – Used in a hydraulic or pneumatic cylinder to exclude or scrape the rod clean. Hydraulic seals are vital in machinery. Hoses, gaskets, -rings, tubing, seals and molded and extruded parts can be fabricated. Sealing Devices also provides molded rubber seals, extrusions, lathe-cuts, gaskets, packing, Teflon seals, mechanical seals, graphite, cloth, metal seals, -rings and metal rings, and a complete line of oil seals. Performance Sealing Inc (PSI) designs and manufactures a full line of high pressure hydraulic seal solutions. Piston and rod seals for medium to heavy-duty hydraulic cylinders. Mechanical seals prohibit fluid leakage around the rotating shaft in a state of extreme pressure, temperature and shaft speed.
Hydraulic seals are crucial in machinery equipment. SSP Seals’ stocks a wide range of hydraulic and pneumatic seals to meet the various needs of industrial applications in terms of design, manufacturing, and application performance. These seals create a tight fit by allowing the passage of reciprocating ramrod through the inner bore of the seal. Bill of Material – A list of all materials needed to manufacture a certain product. For use as an anti-extrusion device in dynamic -ring applications where there is high pressure or excessive gland clearance. Typically called out as “cast” urethane -rings, these parts perform well in quick disconnects, high pressure hydraulic and water applications and in nail or riveting equipment. Wipers work in conjunction with rod seals to protect a system and keeping it free from dirt, mud, water, and other contaminants. This seal design is offered as a rod or piston seal and provides outstanding performance in both hydraulic and pneumatic applications. Snap-in wiper designed to scrape outside contaminants off cylinder rods in medium to heavy-duty hydraulic cylinders. Chesterton” 9K anti-extrusion rings, often referred to as back-up rings, are designed to prevent seals or -rings from extruding into equipment clearances while under pres- sure. To do so would require a combination highly precise machining, unusual materials, low stress on components, and specific fluids—and even then, such a system would fail relatively quickly. Dynamic Seals – Dynamic seals are used when axial or radial movement is required under pressure. These -rings are now standard for systems where the operating temperatures may vary from -65 °F to +275 °F. Contact GBSA today to discuss hydraulic wipers specific to your application. Loaded Lip Seals are very versatile and can be used as rod seals or piston seals. We enjoy the challenge of providing solutions to the most difficult seal applications. Than the inner lip in order to be used for piston applications. KAF’s unique polymer material features high wear resistance and elasticity, thus preventing the damage that commonly occurs during installation. In hydraulic applications, each of the pneumatic seals plays a critical role in keeping the system running efficiently. Lip Seals are for use in rotary applications up to 150 psi in corrosive and abrasive environments. Adjustable packing used in telescoping cylinders and many types of older hydraulic equipment. Within the aerospace industry, custom seals such as silicone sealant strips serve to seal various hydraulic components within aircraft systems. Back-up rings are not seals themselves. Double-acting piston seals are able to concentrate pressure on both sides of a piston, thus driving the ram that the piston is typically attached to. In contrast to the dynamic types of piston seals just described, static piston seals seal the gap between the piston and the piston rod (rather than the piston and the cylinder bore). The hydraulic environment is very extremely tough on seals which must withstand enormous amounts of pressure as well as extreme temperatures and often unbalanced forces and extreme forces inside a cylinder. Various types of seals are used in applications that have constantly moving equipment, such as the rotating or reciprocating shafts and cylinders that are an essential part of hydraulic and pneumatic systems. One basic hydraulic cylinder system may make use of hydraulic cylinder seals , lip seals , hydraulic piston seals, wear rings, scrapers, and more to function effectively. If you have plans for upgrades or expansion of operations in the future, this may impact the best solution for hydraulic seals today. Parker offers a complete range of both activated and non-activated PTFE piston seals and rings for hydraulic and pneumatic applications. Piston seals may also be known as Piston Packing. ISO 9001:2015 manufacturer & designer of mechanical seals, hydraulic seals & pneumatic seals. The seal is designed with initial radial interference to effect low pressure sealing. Piston seals are used to prevent pressurized fluid from leaking across the cylinder head while system pressure pushes the piston down the cylinder bore.
By rolling the ring on an inspection cone or dowel, the inner diameter surface can also be checked for small cracks, particles of foreign material, or other irregularities that cause leakage or shorten the life of the -ring. Also known as scrapers or dust seals, hydraulic wipers are crucial to preventing damage to other system components. The most common hydraulic seals are piston seals and rod seals, which are both cylinder seals with a flexible lip that rubs against the housing or shaft for improved sealing during linear movement. Hydraulic seals are relatively soft, non-metallic rings that are constructed using materials such as polyurethane, rubber or PTFE. Hydraulic seals are different in that they are typically used in liquid or oil, whereas pneumatic seals operate in environments of compressed gas. Most packings and gaskets used in aircraft are manufactured in the form of -rings. The earliest hydraulic system, invented by Joseph Bramah in England during the Industrial Revolution, made use of leather seals to achieve the same results as modern hydraulic seals made of polymeric materials. Most replacement seals, for most applications can be found off the shelf and seal kits for well known applications can be picked up easily. Real Seal manufactures and distributes seal products and mechanical components with a strong focus on performance oriented rubber and plastic materials. 9. Prevents system collapse: By preventing leakage, the flow of fluid can be monitored, and as a result of it, the system can prevent from collapsing. Instead, they are used to maintain the concentricity of the rod in the bore so that the other sealing elements can function properly and don’t wear unevenly. Good dimensional elasticity to ensure faultless operation even with working eccentricities between the rod and the housing or the piston and the cylinder wall respectively, as well as expansion of the cylinder due to operating pressure. Custom manufacturer of seals for hydraulic system applications. UK Seals’ Hydraulic & Pneumatic range caters for the full range of duty cycles. Bonded seals are composed of an elastomeric seal that is adhered to a metal washer for high pressure applications. Urethane seals enjoy wide application as rod scrapers and other dynamic seals in high pressure hydraulic hose, which further attests to its strength and its ability to take abuse. This wiper can also be used as a secondary seal to trap slight leakage from the primary seal. Manufacturer of standard and custom seals, including hydraulic silicate and phosphate gaskets. Hydraulic Zone offers a diverse range of standard and special type cylinders to suit all types of industrial cylinder applications. In some cases, however, replacing hydraulic seals does become necessary. Seals made with these and other elastomeric materials are usually fabricated through extrusion, although Teflon seals are sintered in an oven from a powder form. Applications include: Hydraulic Oil, Petroleum Base, Silicone oil and grease, Mineral and vegetable oil and grease, Aliphatic hydrocarbons (fuel, butane, propane, natural gas), Aromatic hydrocarbons (benzene, toluene), Chlorinated hydrocarbons (trichlorethylene and carbon tetrachloride), Chlorine Water, Gasoline, Fuels, Liquefied Petroleum Gas (LPG), Natural Gas, Propane, Diesel Oil, High vacuum, ozone and weather. In our stock you will find piston seals (PK3 and PK4), u-rings (UN, D2 and D3) and wiper seals (MW, ME1 and ME2). Also known as Gland seals , Headbush or Neck Seals, Rod seals act as a pressure barrier to maintain and regulate the operating fluid in a cylinder. Coming in two different compounds, nitrile and polyurethane, our comprehensive line of u-cups are ideal in rod and piston applications. Chromex launched a new compact range of hydraulics seals designed to meet the majority of your needs. Rod Seals are deliberated to be the most substantial component of a cylinder sealing configuration. Dynamic Seal: A dynamic seal is installed within the inner shaft of the hydraulic cylinder. But that simple, inexpensive hydraulic seal can cost you thousands in downtime and loss of production if it fails.
Special tooling for the installation of -rings is available. Seals may also be made from non-elastic materials such as felt and leather. Rod and piston installations use Wear Rings. Custom manufacturer of seals including hydraulic, mechanical, metric, military specification seals. Rod seals prevent rod corrosion and helps for the lubrication of wiper seal and rod seals. A seal may consist of more than one component, such as an -ring and a backup ring, or possibly an -ring and two backup rings. Than the outer lip in order to be used for rod applications. A single hydraulic system will usually make use of several different hydraulic seals, each designed to prevent leakage at a different point of pressure within the system. Rod Seals are the most critical seals in a hydraulic cylinder. Maintaining internal pressure and preventing contamination are leading priorities in terms of properly operating a hydraulic cylinder. They are considered to be multi-purpose hydraulic seals and are designed for significantly improved performance. Light-duty hydraulic and pneumatic U-cups used in pneumatic cylinders for industrial and low-pressure applications. 11. Safe: Hydraulic seals are completely safe to use even in the chemical and pharmaceutical industries. Moreover they are specially developed to accommodate different variables such as cylinder speeds, temperatures, pressures and applications. Also called double-lip U-cups and lip seals, they have nitrile lips and a urethane base to provide good stability and support large loads. Vee Packs: These are seals designed with multiple vee rings. The negative lip forms of normal seals allow dirt and foreign particles to be trapped between the seal lips and the cylinder. Sealing materials designed for life science and medical applications must demonstrate excellent resistance to the aggressive organic and inorganic chemicals and media associated with surgical and laboratorial procedures, including intensive cleaning regimes. We supply Hydraulic & Pneumatic seals for single and double acting cylinders, composite piston seals, compact seals, independent wear rings, bonded seals, static seals ( Rings), and symmetrical seals. Rod seals are key in preventing corrosion. A static hydraulic seal is located in a groove and sees no movement – only sealing within its confined space, acting like a gasket To achieve this the gasket should be under pressure. The material we choose for each hydraulic seal is determined by the operating requirements of each application. Style WK Rod Wipers Double lip design provides the ultimate in wiper action to remove foreign material from the exposed rod while still maintaining an adequate lubricating film. Scrapers & Wipers – Scrapers and wipers are components which prevent the build up of dirt, foreign particles and moisture from the piston rods by scraping or wiping it away. Rod seal kits include a rod assembly, rod wiper seal, U-cup rod seal, and -ring for repairing hydraulic cylinders. A hydraulic seal, at the end of the day, must prevent leakage of fluids from cylinders. Other products offered are mechanical, magnetic, non-contacting, and lip seals. Wear bands or wear rings are used to prevent metal-to-metal contact. Seals are divided into three main classes: packings, gaskets, and wipers. V-ring packings (AN6225) are one-way seals and are always installed with the open end of the V facing the pressure. Sometimes however you can use two single acting seals in a ‘back to back’ arrangement in order to create a double acting seal system. This seal is recommended when the coupling clearance between the head and the rod cannot be reduced and in the event of pressure peaks (500 bar). Hydraulic seals are also subdivided into seals, which have symmetrical or asymmetric cross-sections. Piston seal is a type of hydraulic seal where the sealing lip has contact with the entire housing bore. Quad rings can be used in both static and dynamic sealing applications. Rod Seal failure could result in fluid leakage. Rod Seals are affected by changes to the rod surface and fluid temperatures. Suitable for hydraulic applications that anticipate abrasive contaminations and shock loads.
Some wipers have an additional lip to prevent contaminant ingression. Hydraulic applications are challenging for Seals. Rod seals help prevent hydraulic fluid from leaking from the rod end of a hydraulic cylinder. Under zero and low pressures, the -ring pressurizes the lips of the u-cup causing it to create a seal. Our seals and other cylinder repair parts are built to last far longer than the average seal and are held in high regard by many well-known Fortune 500 companies and OEMs. RUB Rod Seals: Made for sealing piston rods, these Single Acting seals include an additional -ring profile that lubricates and resists abrasions. Seals not currently being used need to be adequately stored, lest they deform, corrode, etc. Rod seals are commonly used static hydraulic seals for hydraulic cylinder sealing. A hydraulic seal is any of a number of soft non-metallic rings used to prevent leakage of fluid in hydraulic and pneumatic machinery. Here’s a secret – it is not necessary to buy replacement seals from the hydraulic cylinder manufacturer. Piston Seals can either be single acting or double acting seals. Wipers also provide static sealing function to the cylinder head versus the atmosphere. Anti-extrusion rings are available in many materials and custom profiles including rectangular, contoured, con-tinuous or split designs. Hydraulic seals are used in hydraulic and pneumatic cylinder pistons. Machined grooves in the cylinder housing allow the rod ring to seal directly against the piston shaft. Single-acting piston seals only have to block the pressure from one side of piston, retaining the pressure which powers the piston to move along the cylinder. Piston Seals are usually used in conjunction with bearings and guide rings. Polyurethane Hydraulic Seals will often outwear other materials by large margins especially in abrasive conditions. Gallagher offers the highest performing urethane and PTFE materials for your hydraulic application. For hydraulic applications and the u-cups for pneumatic applications Symmetrical u-cups and squeeze seals are available in a variety of lip shapes and materials. Piston Seals are mounted on a piston head which moves thru the bore of a hydraulic cylinder. Hydraulic -rings were originally established under Air Force-Navy (AN) specification numbers 6227, 6230, and 6290 for use in fluid at operating temperatures ranging from -65 °F to +160 °F. When new designs raised operating temperatures to a possible +275 °F, more compounds were developed and perfected. ESP offers a wide range of hydraulic and pneumatic; rod , piston , symmetrical , and wiper seal profiles and Parker -rings to meet the broad demands of the fluid power industry. Together with the wiper seals, the rod seals can protect the system from external contaminants. The most typical nitrile rubber seals have hardness ranges of 70, 80 and 90 shore. In these positions, seals keep fluid from leaking past the interface between the rod and head, from leaking to the outside of the cylinder, and from flowing across the piston. They are used to prevent contaminants from entering the cylinder when the extended rod retracts back. Piston Seals:These seals help in preventing the lubricant from flowing across the cylinder head. Hydraulic seals are generally made from elastomers, natural and synthetic polymers, which possess weak molecular attraction and highly elastic properties. As an applications engineer, Tim Girardi is no stranger to hi-tech or complex designs. Leakage through the Rod Seal is one of the most common failures so is of significant importance to make the correct choice of Rod Seal type and design. Hydraulic systems are usually sealed with a complex configuration of high performance seals. Piston and rod seals used in pneumatic and hydraulic applications in industrial cylinders. We offer our clients an extensive variety of Hydraulic Seals that have wide usage in various hydraulic machines. Rod Seals are often the decisive factor in the function of a hydraulic cylinder. We can supply seals for single and double acting cylinders, compact seals and composite piston seals, symmetrical seals, independent wear rings, bonded seals and static seals, such as rings.