
Filled Carbon Fiber PTFE Spring Energized Seals Loaded Seals
Model: PTD
Temperature: -40/+260℃
Speed: static or slow rotary
Pressure: ≤40MPa
Product Introduction
Our company adheres to the core values of quality first and service winning, and is willing to work closely with colleagues and customers all over the world to promote the development of the Composite Piston Seals AQ, rotary shaft seal, variseal industry. Our business scope and business subjects continue to diversify, and the depth and breadth of our business development is getting bigger and bigger. We are also known for providing rapid product customization services. We firmly believe in 'quality is benefit, quality is the lifeblood of the enterprise'. All employees always take "unity, innovation, pioneering and enterprising" as their spiritual tenet, take customer satisfaction as the standard, and continue to maintain the excellent reputation of the product with an attitude of excellence.
Description
External Pressure Face Spring Energized Seals are commonly used in static sealing applications. External face seals are typically used to remove environmental media from exposed joints, hinge points, or fittings. Designed for high pressure and high temperature, low-temperature fluids, extreme media, and other applications that exceed the performance characteristics of O-rings and traditional elastic seals. Face Seals are designed for either internal or external pressure, but not both.
For this external pressure design, the open sealed cavity faces outward. Generally, the gland design of the face seal is the same as the O-ring. When designing the seal gland, the typical extrusion gap is 0, but it can be as high as 0.003” without affecting the performance of the seal. This External Pressure Face Spring Energized Seal is equipped with a V-shaped spring as standard.
Specification
Jacket Material | UHPE, PTFE Filled Bronze, Carbon, MoS2, Graphite, Glass Fiber, Ekonol, Polyimide, etc. |
Jacket Color | Black, Green, Coffee, Yellow, etc. |
Spring Material | SS304, SS301,etc. |
Speed | static or slow rotary |
Pressure | ≤40MPa |
Medium | Virtually all fluids chemicals and gases. |
Standard or can fit the groove | Comply with the standard of the Trelleborg-DVE series |

Installation Dimension table based on Metric Size (mm)
An h9 | G +0.25 | Groove depth | R≤ | ||
Recommended range | Extended range | L | Tolerance | ||
3~9.9 | 3~40 | 2.4 | 1.45 | +0.03 | 0.4 |
10~19.9 | 8~200 | 3.6 | 2.25 | +0.05 | 0.4 |
20~39.9 | 12~400 | 4.8 | 3.1 | +0.08 | 0.6 |
40~119.9 | 20~700 | 7.1 | 4.7 | +0.10 | 0.8 |
120~999.9 | 35~1000 | 9.5 | 6.1 | +0.15 | 0.8 |
Features
This External Pressure Face Spring Energized Seal has the following features:
● Lower wear, low friction.
● Even after extended downtimes, breakaway forces are extremely modest.
● Even at modest sliding speeds, there is no stick-slip.
● There are three types of spring for you to choose from, including a V spring, helical spring, and slant coil spring.
● It can tolerate temperatures of -40°C to 260°C.


The company has 5,000 square meters of professional production plants, 2000 square meters of constant temperature and humidity production workshop, and dozens (of sets) of advanced production equipment.


We vigorously implement the market strategy of "going out" and lead the direction of high-quality development of the Filled Carbon Fiber PTFE Spring Energized Seals Loaded Seals industry all the way. Continuous product innovation to meet the individual needs of different users is a problem that every manufacturing enterprise that intends to keep competitive. Our company has many years of industry experience, through years of research and development, we have created our own brand.
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