U-Cup Pistong / Rod Seal
The U-Cup is a single-acting seal out of machined polyurethane by CNC lathe.meanwhile, it could be used to double-acting by back-to-back . It possess a powerful dynamic lip ,it's static lip have a wide contact area , which brings a valid positioning in the groove.
OPERATING CONDITIONS
Pressure: 40 MPa
Speed: 0.5m/s or 0.7 m/s
Temperature: -50 °C to ~ 110 °C
Media : mineral oil ,hydraulic fluids(besides HFC-water glycol,HFD- Phosphate ester synthetic liquid ,Brake Fluid),fuel oil and water
- Simple groove design
- Excellent wear resistance
- Insensitive to shock loads and pressure peaks
- Low permanent compression set
- High resistance to extrusion
- Applicable to harsh working conditions
- Long service life
- Easy to install
-Betted Performance than Moulded Seals.
| The Detailed Index of PU Material |
| Material |
Color |
Hardness |
Work Temperature |
Density |
Elongation at break |
Elastic Modulus |
Wear & Tear |
| / |
/ |
Shore A |
ºC |
g/cm³ |
% |
N/mm³ |
mm³ |
| Standard |
/ |
DIN53505 |
/ |
EN ISO 1183 |
DIN53504/53455 |
DIN53504 |
DIN ISO4649 |
| Polyurethane |
PU |
Green |
A95±2 |
-30~110 |
1.2 |
≥450 |
12 |
18 |
| High temperature hydrolyzable polyurethane |
HPU |
Red |
A95±2 |
-20~110 |
1.2 |
≥330 |
≥13 |
17 |
| Cast polyurethane |
G-PU |
Red |
A95±2 |
-30~110 |
1.2 |
≥280 |
≥11 |
25 |
| Low temperature resistant polyurethane |
T-PU |
Blue |
A95±2 |
-50~110 |
1.17 |
≥450 |
≥12 |
15 |
| Self-lubricating polyurethane |
S-PU |
Gray-Black |
A95±2 |
-20~110 |
1.23 |
400 |
17 |
21 |
| Ultra-high hardness polyurethane |
X-PU |
Dark Green |
A97±2 |
-30~110 |
1.21 |
400 |
21 |
18 |
| Ultra-high hardness High temperature hydrolyzable polyurethane |
XH-PU |
Dark Red |
A97±2 |
-20~110 |
1.22 |
350 |
25 |
20 |
| Ultra-high hardness Self-lubricating polyurethane |
XS-PU |
Gray-Black |
A97±2 |
-20~110 |
1.25 |
350 |
25 |
29 |
The Parameter+Application
Producible Size Range
(0~4000mm)
Producible Material
PU / PTFE / NBR / FKM / POM / PA / PEEK / PE
Mark : During operation, the gap size G(mm) has decisive significance for the sealing function.
| OperatingPressure MPa |
Radial Clearance Gmax |
| D<60mm |
D>60mm |
| 5 |
0.4 |
0.5 |
| 10 |
0.3 |
0.4 |
| 20 |
0.20 |
0.30 |
| 30 |
0.15 |
0.20 |
| 40 |
0.10 |
0.15 |
The above index are maximum values and can't' be used at the same time, such as the maximum stroke speed on the basis of material type, pressure, temperature ,gap value and media.
Piston+Rod Seals Sections:
Due to our unique mahcined process, in addition to the above ordinary cross-sections, we can machined seals of any size and material according to customers' customized drawings.
QingDao Carlock Sealing Technology Co.,Ltd
-------Ultimate Quality Products Provider
·Dedicated Machined Seal For More Than 8 Years.
·High-Pressure Extrusion Brings Higher Density Than Normally One-time Mass Molding.
·More Than 160 Types Sections.
·Customized Size :Dia 0~4000 mm.
As a professional manufacturer of moldless sealing technology, we can provide a complete set of standard and non-standard high-quality sealing products and solutions for various industries.
Our products are ideal for various applications with better raw materials, better processing, higher service life, excellent tensile strength and compression set, and can withstand different pressure media and operating temperatures. Effectively reduce the replacement cycle and maintenance costs. It is widely used in many industries with high quality requirements, such as; Coal mining, oil exploitation, wind power generation, lifting machinery, die-casting equipment, etc.
CNC lathe process breaks through the limitations of traditional molding processes. We can process seals of any size, any form and any material, As a source factory with 20 years of industry experience, we have been a reliable partner for our customers in the global market from design to after-sales.
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