Rod seal | DSH Seals

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The rod seal is the most critical seal of DSH that can be applied for any type of fluid power device, preventing fluid from leaking from the cylinder to the outside. The seal can be effectively used to reduce the leakage which might degrade the equipment performance and, in extreme cases, cause environmental problems.

In addition to the sealing function, our rod seals can also provide a thin lubricating film on the piston rod, which is able to lubricate itself and the wiper seal. The lubricating effect of the seal can also inhibit the corrosion of the piston rod surface and the lubricating film provided by the seal is guaranteed to be thin enough to return to the cylinder during the return stroke.

The hydraulic rod seal can perfectly match the wiper for optimum sealing performance. It is excellently paired with the wiper so that the wiper will not scrape off the microscopic oil film on the rod during the return stroke, causing system leakage.

It is used in combination with rod packing to absorb shock and fluctuating pressure under high loads, and it has a specially shaped slit at the sliding lip that can leak back pressure and eliminate pressure between the wrap and the washer.

DRD-Compact Double Delta Hydraulic Rod Seal

DRD is a double-acting low-friction rod seal solution for compact O-ring grooves, that extends the service range above what an o-ring alone is capable of supporting. The DRD is designed for light-duty applications, is particularly suited for small-diameter installations, and due to its size and design, is easy to install. High performance materials, provide […]

DSI-Bronze Filled PTFE Hydraulic Rod Seal Glyd Ring

DSI are double acting composite rod seals composed of a filled PTFE friction ring and pre-tightened rubber O-ring. They can be assembled in grooves according to standard ISO 7425/2. For reciprocating hydraulic systems. Excellent performance in high, medium, low pressure and high load, high frequency conditions. Especially suitable for long strokes. Suitable for larger […]

DSJ-Bronze Filled PTFE Hydraulic Rod Seal Step Ring

Step seals are generally composed of a rubber O-ring and a PTFE ring. The O-ring is a force-applying element that provides sufficient sealing force and compensates for PTFE rings. Suitable for hydraulic cylinder piston rod seal. Seal is a single-acting seal, divided into piston seals and piston rods. The seal has advantages of low […]

HBTS - High Speed Hydraulic Rod Seal Buffer Ring

HBTS profile O-Ring Energized Low Friction PTFE Rod Seal. This is used to absorb shock and fluctuating pressures under high loads, to isolate high temperature fluids, and to improve the durability of the packing. It has a small frictional resistance and is suitable for high speed, short stroke operation. The slit on the tapered […]

HBY - Rod Hydraulic Buffer Seal

The HBY hydraulic buffer seal, mounted on the pressure side of the piston rod seal, is designed to improve the durability of the piston rod seal by venting the pressure back to the system side. The main parts of the buffer seal are the static lip, dynamic lip, radial slots, and radial channels. The static […]

IDI-PU U-Cup Hydraulic Rod Seal

IDI are Single acting rod seal for earthmoving and other heavy duty applications. Useful in low and high pressure applications. Optional Nylon backup ring will increase maximum sealing pressure. IDI used in heavy duty agricultural, earthmoving and industrial machinery. PU IDI rod seals have a short internal seal lip. The world's trusted hydraulic IDI […]

SPN-High Pressure Rod Seal PTFE Bronze, NBR/FKM

DSH Seals’ SPN-type shaft Lancaster letter is a two-way piston rod seal consisting of a PTFE bronze composite or a high-hardness polyurethane rod seal ring and an E-ring. SPN seals are especially suitable for controlling cylinder servo systems, machine tools, cylinder quick response and construction equipment, and two-way piston rod cylinders. This filler has […]

SPNO-Bronze Filled PTFE Hydraulic Rod Seals

DSH Seals’ SPNO Standard compact seal for wide application. We are designed according to NOK’s SPNO series standard. This filler has low frictional resistance, eliminates stick-slip and ensures high wear resistance. It is a standard combination seal for a variety of operations. Applications: engineering machinery, presses, agricultural machinery, lifts, industrial enquipment, injection molding machines. […]

SPNS-Hydraulic Rod Seal Low Speed Step Seal

SPNS type hydraulic seal is a relatively soft, non-metallic ring that is captured in a groove or fixed in a combination of rings to form a seal assembly to prevent or separate fluids in reciprocating applications. Hydraulic sealing is essential in machinery. Their use is critical to providing a way to convert fluid dynamics […]

Yxd-PU U-Cup Hydraulic Cylinder Rod Seal

The hydraulic cylinder rod seal, also abbreviated as hydraulic rod seal or hydraulic cylinder seal, is often installed in the dust seal inside the hydraulic cylinder end cap. Acting as one of the primary pressure bearing components, the hydraulic rod seal prevents the hydraulic oil from leaking, and this means the rod seals hold compression […]

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