HPK Rubber Piston Seal combines a modified nylon sealing ring with an elastomer energizer for excellent wear resistance, low friction, and high-pressure sealing performance. Ideal for heavy-duty hydraulic equipment operating under demanding conditions.
Item NO.:
HPKOrder(MOQ):
50Payment:
T/TProduct Origin:
ChinaShipping Port:
ShanghaiProduct Description
HPK Rubber Piston Seal is a robust composite sealing solution designed for heavy-duty hydraulic applications. It consists of a split modified nylon sealing ring and an elastomer energizer, combining excellent sealing performance with superior wear and extrusion resistance.
As a reliable double acting piston seal HPK, the seal delivers stable operation under high-pressure conditions and remains insensitive to pressure spikes. Its low breakaway and running friction ensure smooth cylinder movement without stick-slip, even at low speeds. The split-ring design also allows easy installation without special tools, making it an ideal choice for demanding hydraulic systems where durability and reliability are essential.
Technical Data
| Parameter | Value |
| Operating temperature | -30°C to +110°C |
| Working Pressure | ≤ 50 MPa |
| Surface speed | ≤ 1 m/s |
| Material | NBR+Nylon |
| Design type | NBR Piston Seal |
| Unit system | Metric |
Applications
HPK piston seal is widely used in heavy hydraulic equipment, hydraulic presses, construction machinery, mining equipment, and other high-load hydraulic systems. It is particularly suitable for applications operating under extremely high pressure, with working pressures up to 80 MPa and even higher in certain conditions.
Product Parameter Table
| Designation | Rod diameter | Housing groove diameter | Housing groove width | Primary sealing element |
| [mm] | [mm] | [mm] | ||
| HPK 32X21X4.2 M4000 | 21 | 32 | 4.2 | NBR+Nylon |
| HPK 40X29X4.2 M4000 | 29 | 40 | 4.2 | NBR+Nylon |
| HPK 50X39X4.2 M4000 | 39 | 50 | 4.2 | NBR+Nylon |
| HPK 55X44X4.2 M4000 | 44 | 55 | 4.2 | NBR+Nylon |
| HPK 60X49X4.2 M4000 | 49 | 60 | 4.2 | NBR+Nylon |
| HPK 63X47.5X6.3 M4000 | 47.5 | 63 | 6.3 | NBR+Nylon |
| HPK 63X44.7X7 M4000 | 44.7 | 63 | 7 | NBR+Nylon |
| HPK 70X59X4.2 M4000 | 59 | 70 | 4.2 | NBR+Nylon |
| HPK 75X54X8.1 M4000 | 54 | 75 | 8.1 | NBR+Nylon |
| HPK 80X59X8.1 M4000 | 59 | 80 | 8.1 | NBR+Nylon |
| HPK 80X64.5X6.3 M4000 | 64.5 | 80 | 6.3 | NBR+Nylon |
| HPK 85X64X8.1 M4000 | 64 | 85 | 8.1 | NBR+Nylon |
| HPK 90X69X8.1 M4000 | 69 | 90 | 8.1 | NBR+Nylon |
| HPK 90X74.5X6.3 M4000 | 74.5 | 90 | 6.3 | NBR+Nylon |
| HPK 95X74X8.1 M4000 | 74 | 95 | 8.1 | NBR+Nylon |
| HPK 100X84.5X6.3 M4000 | 84.5 | 100 | 6.3 | NBR+Nylon |
| HPK 105X84X8.1 M4000 | 84 | 105 | 8.1 | NBR+Nylon |
| HPK 110X94.5X6.3 M4000 | 94.5 | 110 | 6.3 | NBR+Nylon |
| HPK 115X94X8.1 M4000 | 94 | 115 | 8.1 | NBR+Nylon |
| HPK 120X99X8.1 M4000 | 99 | 120 | 8.1 | NBR+Nylon |
| HPK 125X104X8.1 M4000 | 104 | 125 | 8.1 | NBR+Nylon |
| HPK 125X109.5X6.3 M4000 | 109.5 | 125 | 6.3 | NBR+Nylon |
| HPK 130X109X8.1 M4000 | 109 | 130 | 8.1 | NBR+Nylon |
| HPK 135X114X8.1 M4000 | 114 | 135 | 8.1 | NBR+Nylon |
| HPK 140X119X8.1 M4000 | 119 | 140 | 8.1 | NBR+Nylon |
| HPK 145X124X8.1 M4000 | 124 | 145 | 8.1 | NBR+Nylon |
| HPK 150X129X8.1 M4000 | 129 | 150 | 8.1 | NBR+Nylon |
| HPK 160X139X8.1 M4000 | 139 | 160 | 8.1 | NBR+Nylon |
| HPK 165X144X8.1 M4000 | 144 | 165 | 8.1 | NBR+Nylon |
| HPK 170X149X8.1 M4000 | 149 | 170 | 8.1 | NBR+Nylon |
| HPK 175X154X8.1 M4000 | 154 | 175 | 8.1 | NBR+Nylon |
| HPK 180X159X8.1 M4000 | 159 | 180 | 8.1 | NBR+Nylon |
| HPK 190X169X8.1 M4000 | 169 | 190 | 8.1 | NBR+Nylon |
| HPK 200X179X8.1 M4000 | 179 | 200 | 8.1 | NBR+Nylon |
| HPK 210X189X8.1 M4000 | 189 | 210 | 8.1 | NBR+Nylon |
| HPK 220X199X8.1 M4000 | 199 | 220 | 8.1 | NBR+Nylon |
| HPK 230X209X8.1 M4000 | 209 | 230 | 8.1 | NBR+Nylon |
| HPK 240X215X8.1 M4000 | 215 | 240 | 8.1 | NBR+Nylon |
| HPK 250X229X8.1 M4000 | 229 | 250 | 8.1 | NBR+Nylon |
| HPK 270X249X8.1 M4000 | 249 | 270 | 8.1 | NBR+Nylon |
| HPK 280X255.5X8.1 M4000 | 255.5 | 280 | 8.1 | NBR+Nylon |
| HPK 300X272X9.5 M4000 | 272 | 300 | 9.5 | NBR+Nylon |
| HPK 320X292X9.5 M4000 | 292 | 320 | 9.5 | NBR+Nylon |
HPK Piston Seal
 |
|
| Material codes | M4000 |
| Pressure | High Pressure |
| Speed | Up to 1 m/s (3.2 ft/s) |
| Temperature range |  |
 |
Extreme low temperature range: may be intermittently exposed (e.g. cold start-up) without seal damage, but seal performance may be compromised while in this range |
 |
Temperatures below the recommended operating range: seal performance depends on system design (precision guiding arrangement recommended) |
 |
Recommended operating temperature range for this profile and material |
 |
Temperatures above the recommended operating range: acceptable only with reduced pressure, speed, e-gap and/or with the use of a full-face anti-extrusion ring |
 |
Extreme high temperature range: only occasional short-term exposure (e.g. cylinder in curing oven of a powder coating process) |
| Dimension standards | Designed to fit standard housing dimensions according to ISO 5597:2010. |
| Size list | → Metric |
| Additional information | → Double-Acting Piston Seal |
| Maximum values of application parameters (e.g. pressure, speed, temperature, e-gap) should not be applied continuously nor simultaneously. | |
HPB Double-Acting Piston Seal adopts PU+NBR combination structure, wear-resistant bidirectional piston seal for medium-high pressure hydraulic cylinders. Fit agricultural & construction machinery, custom sizes & materials available.
Details
HPGA Double-Acting PTFE Piston Seal features a PTFE sealing ring, NBR energizer, and nylon backup rings for low friction, anti-extrusion performance, and reliable sealing in heavy-duty hydraulic cylinders. Ideal for double acting hydraulic cylinder piston seals.
Details
HPIA Double-Acting NBR Piston Seal combines an NBR sealing element, polyester support rings, and POM guide rings for reliable dynamic and static sealing. Ideal for compact hydraulic cylinders requiring excellent wear resistance and pressure retention.
Details
HPS Single-Acting Piston Seal is a polyurethane U-cup sealing solution for hydraulic cylinders. Designed for excellent wear resistance, pressure retention, and reliable static and dynamic sealing performance in medium and low-pressure applications.
Details
HPD Composite Piston Seal features a polyurethane slide ring and elastomer energizer for reliable double-acting sealing performance, low internal leakage, and excellent wear resistance in hydraulic cylinders and accumulator applications.
Details
HRSD Single Lip Rod Seal is made of high-temperature polyurethane with excellent wear resistance and low-pressure sealing performance. Designed for excavator hydraulic cylinders, it provides reliable leakage prevention and long service life.
Details
HPF High Pressure Piston Seal is designed for mining hydraulic supports and heavy-duty cylinders, featuring excellent extrusion resistance, high-pressure performance, and long service life.
Details
HRF Hydraulic Piston Rod Seal is a pressure-energized symmetrical seal with an integrated O-ring for reliable sealing under low-pressure, vacuum, and high-pressure conditions. Suitable for both piston and rod applications in hydraulic cylinders.
DetailsLeave A Message
Scan to wechat :
