Customized Standard Backup Ring BRT BRN 255 280 4 PA Black Material Piston Gasket

Customized Standard Backup Ring BRT BRN 255 280 4 PA Black Material Piston Gasket

1 . Detailed Product Description

Product Highlights

• Precision Engineering & Perfect Fit: Manufactured in strict compliance with BRT/BRN standards (ID 255mm x OD 280mm x Height 4mm). Specifically engineered for high-pressure hydraulic piston sealing systems to prevent O-ring extrusion and deformation under peak system pressures.
• High-Grade PA Black Material: Crafted from premium industrial-grade Polyamide (PA/Nylon) with a sleak black finish. Features high mechanical strength, superior wear resistance, and exceptional tensile and compressive capabilities.
• High Hardness & Load-Bearing Capacity: Offers an ideal balance of stiffness and structural rigidity. Maintains shape and integrity under high pressure, severe shock loads, and high-frequency reciprocating movements, effectively extending the lifespan of the primary seal.
• Extreme Environment Adaptability: Excellent compatibility with mineral oils, hydraulic fluids, and various industrial media. Performs reliably across a wide operating temperature range, making it ideal for heavy-duty construction machinery and industrial hydraulic equipment.
• Uncompromised Durability & Quality Commitment: Produced under strict quality control with precise dimensional tolerances. Built to withstand millions of pressure cycles without fatigue, minimizing equipment downtime and lowering maintenance costs.

Detailed Description

Overview

The BRT / BRN Series Black PA Piston Backup Ring (255 x 280 x 4 mm) is a heavy-duty auxiliary sealing solution designed for demanding hydraulic systems. Functioning as a robust support element behind primary rubber or polyurethane seals (such as O-rings or U-cups), it effectively bridges extrusion gaps under high-pressure conditions to ensure zero-leakage performance.

Material & Engineering Performance

• Material & Craftsmanship: Premium modified Polyamide (PA / Nylon) material features a high-density molecular structure. It delivers low friction coefficients, self-lubricating properties, and outstanding resistance to abrasion and surface wear.
• Hardness & Structural Integrity: The high-hardness nylon matrix provides rigid physical support. It effectively prevents the primary sealing element from migrating or shearing into the clearance gap even under pressures up to tens of thousands of PSI.
• Media & Operational Compatibility: Excellent resistance to petroleum-based hydraulic oils, fluids, emulsions, and common industrial lubricants. Suitable for severe dynamic reciprocating piston applications in excavators, hydraulic presses, injection molding machines, and heavy machinery.
• Quality Assurance & Longevity: Every unit undergoes rigorous dimensional and physical testing. Exceptional fatigue and anti-aging resistance guarantee long-term operational stability and maximum seal assembly lifespan.

Technical Specifications

2. Our advantage

....To affordable, Product range, fast delivery .
....Product specifiions more than 30,000 kinds of stocks over 50 million.
....TO provide customers with professional technical and services for engineers .
....Which can provide Seals provide customersa with a variety of sealing solutions .

AutomotiveOil seals, radial shaft seals or Simmerrings® have been designed for sealing shafts and spindles. Oil seals are one of the most frequently used rotary shaft seals. They separate oil or grease on the inside from dirt, dust and/or water on the outside. Most commonly, Oil-seals consist of a rubber sealing lip, a metal housing and a helical tensioned spring.

3,  Installation Precautions:

4...Packaging & Delivery

Packaging Details : The original factory packaging

Dellvery Time :

Payment Term Way by delivery:

• 
• Way by delivery: We can arrange the shipping by Sea,air express,DHL ,EMS, FADEX,TNT.
• Payment Term : Western Union, Cash, Bank, PayPal.HSBC,CITY BANK.

5. Know Before You Buy​:

1. The products sold in this shop are all genuine products, please rest assured to buy without questioning. If you have any questions about the purchased product or have other questions, please feel free to consult our customer service or call our service hotline
2. The shop will give back to new and old customers based on the principle of small profits but quick turnover. The unit price of the product is not tax-included. Contact customer service if tax is included.
3. This store has a strong inventory, and there are physical stores operating at the same time, so the circulation of goods is relatively large, and the inventory may not be updated in time. You can confirm the inventory with our customer service before placing an order to avoid delaying your working time.

6. Receipt Instructions

Our shop will pack every baby carefully, but there will inevitably be accidents during transportation. After receiving the goods, please check the goods in time, and sign for the package after ensuring that it is correct. If you have any questions, please contact us in time.

7. Guangzhou upseal technology co., ltd

Guangzhou upseal technology co., ltd originated from the original Guangzhou Huaxing Oil Seal Company, engaged in international well-known brands of original imported oil seal seals and construction machinery repair kits, set product sales, brand agents, technical support and after-sales service in one company. Focus on the machinery industry market has more than 20 years of history, long-term for the construction machinery industry, metallurgy industry, shipping industry, air compressor industry, automotive industry, hydraulic cylinder factory, marine machinery, mining equipment machinery, electrical machinery and other industries to provide professional solutions. We are committed to the "camp superior products, reputation first" purposes for customer service, to provide customers with more sealed products and competitive prices, the company has a strong product database, inventory of 50 million.

8. Product picture display​

9. FAQ

Q1: The pictures you saw here may not be related to the real products. Please contact us for more details if you want to check products.

A. In order to give you fast and accurate pricing information, we need some details about the machine

Q2: Why choose our products:

1. We can provide you a wide range of oil seals.
2.Assessed 20 year gold supplier.
3. Our oil seals has best quality and best service with competitive price.

Q3: How long is your delivery time?

A: Generally it will take 1 to 3 days. The specific delivery time depends on the items and the quantity of your order.

Q4 Do you provide samples? is it free?

A: Yes, we could offer the sample for free while customer need only afford the express freight.

Q4: How long is your delivery time?

A: Generally it takes 1-2 days if we have stock.

Q5: How to guarantee your after sales service?

1. Strict inspection during production

2. Recheck the products before shipment to ensure our packaging in good condition

3. Track and receive feedback from our customer

Q7: NBR,FKM(FKM),EPDM,SILICONE,NEOPRENE(CR),PU(POLYURETHANE),ACM,AEM,etc.

Q8: What materials are to produce ? Do you have a minimum order requirement?

A: Small trial order is acceptable.

A. In order to give you fast and accurate pricing information, we need some details about the machine engine/appliion and the part number of the part you want. And, size and pictures will be better if you are not sure about it. We can check and help you with it.

B. If you can not find the parts you want here, please contact us for an inquiry. Thank you.
If you can not find the parts you need, please contact us with details.
Contact me: nfkseal@aliyun.com