High Static Effect Spare Part Seal Ring for Mechanical Seal

• Customization: Available
• Material: NBR
• Application: Cylinder
• Model NO.: PW4
• Type: Oil Seal
• Performance: High Pressure
• Shape: O-Ring
• Standard: Standard, Nonstandard
• Pressure: up to 25 MPa (Z20n)
• Temperature: -35 °c to +110 °c
• Media: Mineral Oil-Based Hydraulic Fluids
• Speed: up to 0.5 M/S
• Advantages: High Static and Dynamic Sealing Effect
• Suitable for: Grooves to ISO 7425, Part 1.
• Bore Diameter: DN = 63 mm
• Transport Package: OEM
• Specification: 32.0*21.0*4.2
• Trademark: HSCO
• Origin: China

Product Description

Model NO.	PW4	Origin	Shanghai
Size	Standard and Custom Size	Color	Customers Required
Function	Industrial hydraulic light to medium duty,Agriculture,Machine tools	Feature	Simple groove design,High abrasion resistance,dynamic sealing effect
Material	PU+NBR	OEM	OEM Service Provided

Product Description

Description

Advantages

PW4 is a double-acting seal consisting of a special polyurethane seal ring and an O-Ring as energizing element (Figure 141). 
The particular characteristic of the seal is the special design of 
the seal edge profile. Two external seal edges act as primary 
seal for pressures from both sides and prevent any build-up of 
hydrodynamic pressure over the seal profile and the risk of the 
blow-by effect. The central back-up and sealing bulge increases 
the sealing effect*. Grooves are provided on both sides on the 
plane surfaces to provide activation of the energizing O-Ring. 
These ensure direct pressure loading of the seal under all 
operating conditions.

- High static and dynamic sealing effect 
- High abrasion resistance 
- Simple groove design, one-piece piston possible 
- Suitable for grooves to ISO 7425, Part 1.

Since the installation groove is identical to that for the 
PW4, the seal is ideal for the standardisation of 
cylinder construction if, efficient and low cost seal elements 
are demanded in large quantities and, the cylinder can be 
adapted to meet different operating conditions. It has to be 
taken into consideration that in this case the gap dimension 
has to be checked!

Company Profile

Company Profile

Our Advantages

Shanghai Huifeng (HSCO) was established in 2006 and is a renowned hydraulic system solution provider in the industry. It offers customers high-quality sealing components, hydraulic elements, customized electro-hydraulic integrated control system solutions, and products, among others...
The Huifeng factory was founded in 2019, specializing in the R&D, design, production, and processing of hydraulic products, as well as the provision of solutions. We are committed to delivering high-performance and highly reliable hydraulic components and customized electro-hydraulic integrated control systems to meet the stringent demands of customers in complex and variable working conditions.
The Huifeng factory boasts a dedicated R&D team composed of senior engineers and professional technicians who stay abreast of industry trends and continuously drive product iteration and upgrades. Our independently developed hydraulic valve assemblies employ high-precision machining processes and imported premium materials, ensuring product precision and durability, and are widely applied across various industries

1.Years of Experience: With over a decade of sealing solution expertise, we provide customers with one-stop services.  
2.Diverse Product Range: A wide selection of products to meet diverse customer needs.  
3.Ready Stock: Based on years of industry experience, we analyze market demand and maintain reasonable inventory to promptly fulfill customer applications.  
4.Quality Assurance: Supported by industry-leading processing technology and equipped with high-performance testing benches.

FACTORY ENVIRONMENT

Certifications

FAQ

1. who are we?
We are based in Shanghai, China, start from 2021,sell to Domestic Market(45.00%),Southeast Asia(39.00%),Eastern Europe(16.00%). There are total about 11-50 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Seals,Valve Block,Valve Blocks,Cartridge Valve,Plate Valve
4. why should you buy from us not from other suppliers?
We has its own warehouse of 300 square meters, with an inventory of about 3000 SKUs, with a total inventory of more than one million pieces, covering more than 80% of the models of common seals for construction machinery.
5. what services can we provide?
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