Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of casing secondary bt seals in China, also supports customized service. Please feel free to buy high quality casing secondary bt seals for sale here from our factory.
Products Description
Casing secondary BT seals are a type of secondary sealing component used in oil wells or pipeline systems. These seal components are usually installed in the lower sealing area of the casing joint or tubing head to provide an additional well control safety measure.
Casing Secondary BT Seals
BT Seal is a static seal that is used to seal rough casing and tubing. It is constructed from an elastomer with an anti-extrusion spring bonded within it. Springs are available in stainless steel, elastomer could be HNBR or NBR.
| Technical Data Sheet | ||||
| HNBR 85 | Property | Value | Unit | DIN Standard |
| Hardness | 85 ±5 | Shore A | DIN ISO 7619-1 | |
| Density | 1.40 | g/cm³ | DIN EN ISO 1183-1 | |
| Tensile strength at 100% elongation | 12.6 | N/mm² | DIN 53504 | |
| Elongation at break | 190 | % | DIN 53504 | |
| Tensile strength | 16.6 | N/mm² | DIN 53504 | |
| Compression set 100°C/24h | 15.3 | % | DIN ISO 815-1 | |
| Compression set 150°C/24h | 13.0 | % | DIN ISO 815-1 | |
| Rebound resilience | 35 | % | DIN ISO 53512 | |
| Tear resistance | 5.8 | N/mm | DIN ISO 34-1 A | |
| Abrasion | 120 | mm³ | DIN 53516 | |
| min. operating temperature | -20 | °C | dynamic | |
| min. operating temperature | -25 | °C | constantly | |
| max. operating temperature | +150 | °C | constantly | |
| max. operating temperature short | +180 | °C | couple of hours | |
Construction and Design
Material Composition: BT seals are made of elastomers, typically HNBR or NBR, with an anti-extrusion spring integrated into the design.
Static Sealing Function: Designed for static applications, these seals provide a reliable barrier between rough casing and tubing.
Performance Specifications
Pressure Resistance: A single BT seal can withstand pressures up to 5,000 PSI, while configurations with two seals can withstand higher pressures.
Temperature Range: They operate effectively in temperatures ranging from -50°C to 121°C, making them suitable for a wide range of environmental conditions encountered in downhole operations.
Applications
Main Use: BT seals are primarily used for secondary sealing between the casing head and the bottom of the tubing head. This function is critical to maintaining wellbore integrity and preventing leaks.
Redundant Safety: They provide redundant wellbore safety by sealing the casing annulus and the flange connections of the casing head and spool, thereby improving overall safety during drilling and production operations.
| Operation Conditions | ||
| Temperature range | Pressure | Medium |
| -50°C~121°C | ≤15000PSI | Oil, water, Gas, H2S, CO2, etc |
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%.
01
R&D Advantages
02
Manufacturing Advantages
03
Product Advantages
Certification
Quality Management and Environmental Management Certification
Contact US
we are here for you
amy@lindepolymer.com
mina@lindepolymer.com
+8613159203761
Hot Tags: casing secondary bt seals, China casing secondary bt seals manufacturers, suppliers, factory, Rear Swing Arm Suspension Rubber Boots, Hydroboost Repair Kit, Timing Belt Rubber Closed Loop, Oil Pump Control Valve Gasket, Steering Column Dash Rubber Seal, Rubber Bead Breaker Loosener Seals
