English
The FDB seal is made of a helical wound spring and a polymer jacket, It is the best choice for vacuum, gas and low-temperature flange sealing applications.
Brand:
JST SealsItem NO.:
FDBPayment:
T/TProduct Origin:
ChinaShipping Port:
GuangzhouOrder(MOQ):
50Helical spring energized seals for oil and gas application
The low temperature PTFE spring energized seal for the valve is a single piston seal. When the working pressure is greater than or equal to 1500LB, a high-strength backup ring can be added to protect the sealing lip from damage. PTFE elgiloy lip seal is composed of PTFE+ Helical spring, and different materials can be used for different temperatures and pressures. Usually used for 6D ultra-low temperature (- 196 °) and normal temperature.
It has high spring load, good sealing integrity under low pressure, and can be used for internal and external pressure. It is the best choice for vacuum, gas and low-temperature flange sealing applications.
 |
Advantages: 1. Material compound passed API 6A FF/HH Immersion Testing; 2. Passed BS6364 test(-196℃); 3. High load helical wound spring with small deflection range; 4. Rigid spring acts as a energizer to resist low-temperature shrinkage; 5. NACE-approved energizers available for oil and gas use; 6. One-way or two-way design is available; 7. With single spring or double spring design; |
| Working Conditions | |||
| Material | Temperature range | Pressure | Medium |
|
Sealing ring: Teflon+carbon fiber
Spring: 316SS
|
-196~100℃ | 150LB, 300LB, 600LB, 900LB, 1500LB, 2500LB | LNG, Low temperature ethylene |
|
FDB For valve end face |
||||||
|
Groove DWG:
|
||||||
|
Temperature Rating |
JST Series |
Spring |
0~900（LBS) |
900~2500(LBS) |
G=(OD-ID)/2 Standard CS:G=(OD-ID)/2 |
L Value |
|
(-196℃~100℃) |
FDB |
Golden Elgiloy |
|
|
3.1 |
4.8 |
|
4.7 |
7.1 |
|||||
|
6.1 |
9.5 |
|||||
|
6.9 |
10 |
|||||
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
Categories
In LNG operations, valves can regularly encounter temperatures below -320 F (-196 C) and pressures above 750 pounds per square inch (psi). They are also subjected to periodic variations in temperatures known as “thermal cycling,” which can result in hardware expansion as well as shrinkage and material stresses. These factors make reliable, long-term valve operation an engineering challenge.
The FDR seal is made of a helical wound spring and a polymer jacket, which is mainly used as a Flange external face seal.
JST ESY series design is commonly used as dynamic seal for ball valve stem, and the ESY with various V rings and T shape support rings could be used for fugitive emission valves, meeting the requirements of ISO-15848.
SPGO is a low friction piston seal consisting of PTFE+Bronze seal ring and rubber o-ring used for two-way piston seal of Hydraulic cylinder, to seal in fluid, thus preventing the flow of fluid across the piston, allowing pressure to build up on one side of the piston.
KZT is used in combination with anti-wear and piston ring to prevent cylinder oil from mixing with foreign particles, avoiding seal damage.
The FHB seal is made of a helical wound spring and a polymer jacket, which is mainly used as a Flange internal face seal.
High pressure Rotary Seals is one bidirectional rotary seal which can bear both sides of pressure and alternating pressure.
Many industries use FFKM O-rings in critical applications where sealing failure is strictly prohibited. These industries include chemical processing, energy, semiconductors, pharmaceuticals, oil and gas recovery, aerospace, and other industries.
For inquiries about our products or pricelist, please leave to us and we will be in touch within 24 hours.
No. 1, Xinyu North Road, Ningxi Street, Zengcheng District, Guangzhou, China 511340
© Copyright: 2025 Guangzhou JST Seals Technology Co., Ltd. All Rights Reserved.
Friendly Links:
VonesealsScan to wechat
