About Piston Seals
The polyurethane piston seal is a double-acting piston seal with the same mounting groove as the OK and OE piston seals (in accordance with ISO 7425-1 standard), which is particularly suitable for medium load conditions. As a bidirectional seal, it has very good dynamic and static sealing performance, and its sliding ring material is very wear-resistant. It is composed of a high-modulus polyurethane sliding ring with improved lubrication characteristics and a rectangular cross-section nitrile rubber elastic energizing ring.
Ordinary Piston Seal Section:
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.
Our wide range of materials comply to different designs to suit varying operating conditions.
| The Detailed Index of PU |
| 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 |
QingDao Carlock Sealing Technology Co.,Ltd
-------Ultimate Quality Products Provider
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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