Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of hnbr 90 aed triangle ring for ball valve in China, also supports customized service. Please feel free to buy high quality hnbr 90 aed triangle ring for ball valve for sale here from our factory.
Products Description

HNBR 90 AED triangle ring is a sealing element for ball valves, mainly made of hydrogenated butadiene rubber (HNBR) with a hardness of 90 Shore A. This material is characterized by its resistance to high temperatures, oils, and chemicals, making it very popular in various industrial applications.
Advantages
Key benefits of using these specialized seals:
- Enhanced sealing performance
The cross-section of the HNBR 90 AED triangle ring allows for greater surface contact with the support ring, resulting in a more reliable seal than conventional O-rings.
These triangle rings require less sealing force to maintain a tight seal, reducing valve components' stress and increasing their service life.
- Resistant to harsh conditions
Chemical and temperature resistance: HNBR (hydrogenated nitrile rubber) has excellent resistance to oils, chemicals, and temperatures, making it suitable for oil and gas applications where contact with irritants is common.
Resistant to explosive decompression: HNBR is inherently resistant to explosive decompression (AED), and critical to maintaining seal integrity under extreme pressure fluctuations.
- Durability and service life
HNBR 90 has excellent mechanical properties, such as tensile strength and wear resistance, ensuring the seal can withstand rigorous operating requirements without degradation.
Material Description
| HNBR 90 | |||
| Original Properties | Specification Value | Test Result | Test Method |
| Hardness Shore A | 90±5 | 92 | ASTM D2240 |
| Tensile Strength, MPA, MIN | 20 | 25 | ASTM D412 |
| Ultimate Elongation,%, MIN | 100 | 139 | ASTM D412 |
| Specific Gravity(g/cm3) | 1.25±0.03 | 1.265 | ASTM D297 |
| Heat Resistance 70H,at 150℃ | ASTM D573 | ||
| Change In Hardness, Points, MAX | +10 | ||
| Change InTensiles Strengths, MAX % | -25 | ||
| Change In Ultimate Elongation, MAX % | -30 | ||
| Compression set 150℃@22H | |||
| Compressions Set,MAX%,22H at 150℃ | 30 | 22 | ASTM D395 |
| Low-Temperature Testing | ASTM D2137 | ||
| Low-Temperature Testing -40℃*3Min PASS | |||
Design of AED Triangle Ring
Applicability: This ring is usually used in ball valves under high-pressure and high-temperature environments to ensure the safety and reliability of operation.
Shape and contact area: The triangle ring has an isosceles right triangle cross-section, which provides a larger contact area for the support ring. This enhances the sealing reliability by ensuring full contact with the groove surface of the support ring.
Installation: The triangle ring is installed in the groove of the support ring and is tightly pressed on the valve seat pressure ring. This configuration minimizes the gap and improves the sealing performance.
Typical Applications Of HNBR 90 AED Triangle Ring For Ball Valve
Logging, drilling equipment
Well completion tools
Wellhead equipment
Pipeline valves
The compressor
about Us
Linde Polymer Tec Co., Ltd. mainly produces a variety of rubber compounds and rubber seals and currently has more than 3,000 material formulas and more than 2,000 product specifications. Products are suitable for automotive, aviation, machinery, petrochemical, medical, food, electronics, military, industrial, and other fields. Since the establishment of the factory, the company has completed the process consistency operation, and the product yield rate has reached 97.1%.

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