Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of petroleum packing seals in China, also supports customized service. Please feel free to buy high quality petroleum packing seals for sale here from our factory.
Petroleum packing seals Description
Petroleum packing seals are a critical sealing element used in petrochemical equipment to prevent fluid leakage and external impurities ingress. The following is an introduction to petroleum packing seals:
Overview of petroleum packing seals
Petroleum packing seals are a commonly used sealing technology in the petrochemical industry. They seal the shaft to the bushing or stem to the bonnet by filling it with soft materials such as asbestos rope, PTFE, carbon fiber, etc. This sealing method is widely used in the shaft sealing of various pumps, valves, agitators, and other equipment because of its simple structure, low cost, and convenient maintenance.
| EVSP 9000 |
Structure: The GRAPH-LOCK® sealing ring is made of high-purity diamond-textured graphite tape, molded into a cup cone structure, and the end ring is made of Garlock 1303-FEP. Temperature: -200ºC to +455ºC in air, to +650ºC in steam. pH range: 0-14 (except strong oxidants). Pressure: up to 690 bar. |
| QUICKSET® 9001 VALVE PACKING 1303-FEP |
Construction: High purity GRAPH-LOCK® flexible graphite fiber 0.1 mm INCONEL* filament. Temperature: -200ºC to +455ºC in air, to +650ºC in steam. pH range: 0-14 (except strong oxidants). Pressure: up to 310 bar. |
| LATTICE BRAID® woven carbon fiber |
Medium: acid, strong alkali, hot oil, solvent, boiler feed water, condensate. Temperature: -200ºC to +455ºC in air, to +650ºC in steam. pH range: 0-14 (except strong oxidants). Shaft speed: up to 20 m/s. Pressure: up to 35 bar, rotary/centrifugal; Up to 173 bar, used on valves. |
| CARBAE™ 105 & 108 |
Construction: 95% carbon fiber with PTFE cladding or graphite-coated. Medium: acid, corrosive, slurry, etc. Temperature: -200ºC to +316ºC in air, to +650ºC in steam. pH range: 0-14 (except strong oxidants). Shaft speed: up to 15 m/s (105) and 20 m/s (108). Pressure: up to 35 bar, rotary/centrifugal; up to 173 bar, valve. |
| TORNADO PACK™ F1, F3, F5 |
Construction: 127-AFP: INCONEL filament reinforced carbon fiber braided core spun structure; 1298: INCONEL YARN REINFORCED PBI** CORNER BRAIDED CARBON FIBER STRUCTURE; 1303-FEP: INCONEL* filament-reinforced flexible graphite. Temperatures: up to +650ºC in steam, +345ºC in the atmosphere (F1), +455ºC in the atmosphere (F3, F5). |
| 5889 Chemically resistant packing for pump and shaft equipment |
Structure: LATTICE BRAID® continuous fiber PTFE braided PTFE coated and silicone lubricated. Temperature: -270ºC to +260ºC. pH range: 0-14. Shaft speed: up to 8 m/s. Pressure: up to 20 bar, spinning/centrifugation. |
How it works
Petroleum packing seals work by compressing the packing to create enough contact pressure on the shaft surface to stop fluid leakage. The compressibility of the packing allows it to accommodate small vibrations and eccentricities of the shaft, maintaining a continuous seal. At the same time, the self-lubricating properties of the packing also reduce the friction between the shaft and the packing, extending the service life of the equipment.
Material selection
The material selection of petroleum packing seals is critical and has a direct impact on seal performance and service life. Commonly used packing materials include asbestos rope, polytetrafluoroethylene (PTFE), carbon fiber, etc. Asbestos ropes are widely used due to their resistance to high temperatures and pressures, but their use is gradually decreasing due to health risks. PTFE has good chemical stability and low coefficient of friction and is suitable for a variety of chemical media. Carbon fiber, on the other hand, is favored for its high strength and abrasion resistance.
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