33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
Home / Products / Piston Seal
PPDI U-packing seals are professional hydraulic sealing components.They are made of special PPDI material.Their core physical properties fully meet relevant international standards.They are designed for reciprocating hydraulic sealing in various industrial equipment.
Performance Item |
Technical Specification |
Main Material |
Special PPDI material |
Compliant Standards |
Relevant international standards |
Hardness |
95±2 Shore A (Test standard: DIN ISO 7619-1:2012) |
100% Modulus |
≥9.8 MPa (Test standard: DIN 53504:2017) |
300% Modulus |
≥15 MPa (Test standard: DIN 53504:2017) |
Tensile Strength |
≥50 MPa (Test standard: DIN 53504:2017) |
Elongation at Break |
≥469% (Test standard: DIN 53504:2017) |
Compression Set |
≤22% (24H/70℃,25% deflection); ≤30% (24H/100℃,25% deflection) (Test standard: DIN ISO 815-1:2016) |
Rebound Resilience |
≥45% (Test standard: DIN 53512:2000) |
Abrasion Loss |
≤28 mm³ (Test standard: DIN ISO 4649-1:2014) |
Working Temperature |
-45℃ ~ 130℃ |
The special PPDI material delivers excellent high and low temperature adaptability.It has outstanding wear resistance, compression resistance and tensile strength.It features high rebound resilience, low compression set and low abrasion loss.It ensures stable performance during long-term operation.
4. Application Scope
These seals are widely used for hydraulic sealing in multiple industries.
Main applications include construction machinery, hydraulic machine tools, mining equipment, metallurgical machinery and automotive hydraulic systems.They also fit other equipment with strict hydraulic sealing demands.
5. Core Product Advantages
It has a wide working temperature range from -45℃ to 130℃.
It maintains stable sealing under complex temperature and working conditions.Its premium physical properties extend the service life effectively.
It satisfies the strict sealing requirements of heavy-duty and precision hydraulic equipment.
Welcome to HOVOO, a Chinese seal factory. Production of PU, Rubber and PTFE seals. The seals include O-ring, piston seal, rod seal, Gray ring and gas seal.
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