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 / Hydraulic Pump / Danfoss
Product Overview
This heavy-duty repair seal kit is professionally engineered for Danfoss PV90R250 variable displacement axial piston hydraulic pumps, a core model of Danfoss Series 90 pump lineup. It is a complete sealing solution for full disassembly, overhaul and routine maintenance of PV90R250 pumps, and also compatible with the matching PV90L250 model in the same series.
The kit is fully assembled with all necessary sealing components including shaft seals, standard O-rings, flat gaskets, reinforced backup rings and special sealing parts for pump internal valve groups. Adopting imported high-quality NBR nitrile rubber and FKM fluororubber as core sealing materials, this set delivers excellent oil resistance, high-pressure resistance, wear resistance and anti-aging performance. It serves as a precise direct replacement for original Danfoss seal parts. The kit thoroughly resolves typical pump failures such as external oil leakage, internal leakage and system pressure loss, and effectively extends the service life of PV90R250 pumps operating under continuous heavy load, frequent pressure fluctuation and severe vibration working conditions.
Product Specifications
Item |
Detailed Parameter |
Product Name |
Danfoss PV90R250 Hydraulic Pump Seal Kit |
Applicable Model |
PV90R250 (Displacement: 250cc/rev) |
Compatible Series |
Danfoss Series 90 Variable Displacement Piston Pump (PV90R & PV90L Series) |
Main Material |
Imported NBR / FKM Fluororubber + High-strength Reinforced Backup Ring |
Max Working Pressure |
42MPa (420bar) |
Working Temperature |
-35°C ~ 130°C |
Kit Contents |
Shaft oil seal, O-rings, gaskets, backup rings, valve group seals, full set of overhaul sealing accessories |
Cross Reference OEM No. |
507940 (Genuine Danfoss OEM Part Number) |
Net Weight |
Approximately 1.3kg |
Applicable System |
Closed-circuit hydraulic drive system, mobile machinery hydraulic system, high-pressure fluid transmission system |
Warranty |
12 Months |
Key Selling Points
1. 100% Exact OEM Replacement.Fully matched with the original structure and dimensions of Danfoss PV90R250 pumps, strictly compliant with OEM standard part number 507940. No cutting, grinding or secondary modification is required. It supports fast on-site installation for routine maintenance, emergency troubleshooting and full pump overhaul, greatly improving repair efficiency.
2. Premium Imported Sealing Materials.Core sealing components adopt high-performance FKM fluororubber and reinforced composite backup rings. The materials feature strong resistance to hydraulic oil corrosion, high temperature and mechanical fatigue. It maintains stable and reliable sealing performance in the wide temperature range of -35°C to 130°C, adapting to complex ambient temperatures of outdoor engineering equipment.
3. Outstanding High Pressure & Vibration Resistance.All sealing parts have passed strict 42MPa high-pressure endurance test and long-term vibration simulation test. It effectively eliminates internal and external leakage of the pump, stabilizes the overall hydraulic system pressure, and ensures stable flow and power output of PV90R250 pumps under harsh working conditions such as heavy load impact and continuous operation.
4. Complete All-in-One Overhaul Kit.Integrated with all sealing accessories required for full pump maintenance, including special seals for internal valve groups and shaft protection seals. The unified packaging realizes one-stop parts matching, simplifies on-site parts management, shortens equipment downtime and reduces overall operation and maintenance costs of machinery.
5. Rigorous Factory Quality Control.Every seal kit undergoes air tightness test, high-pressure leakage test and aging test before delivery. All products meet Danfoss original factory quality standards, effectively reducing pump failure rate and providing long-term reliable operation guarantee for engineering and industrial equipment.
6. Wide Application Scope.Specially designed for Danfoss PV90R250 hydraulic pumps widely equipped on various heavy-duty mobile and industrial machinery:
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