活塞密封件的选择取决于油缸运动方向。对于单作用油缸,动态密封压力是来自一侧(单向)。最好选择为单作用功能提供最佳密封质量的密封类型。
双作用油缸的最佳密封能力是能够密封两侧(双向)的动态压力,通过选择双作用密封件来实现。
在双向运动油缸的活塞上使用两个单作用密封的活塞设计很容易导致故障。原因是在两个密封件之间容易形成困压。
活塞密封,单向和双向活塞密封件都可以设计成组合件或挡圈与导向环单独分开应用。
Hallite 拥有一系列活塞密封件并提供最终的泄漏控制。活塞密封件通常用高性能的聚氨酯Hythane® 181,Hallprene®橡胶/纤维聚合物或聚酯弹性体制造而成。
单作用活塞密封
活塞密封件或活塞环用于液压缸流体密封,其设计确保当活塞在系统压力作用下收回缸筒时流体不会通过活塞端头泄漏。
15Max pressure300 Bar Temp range-30°C 100°C Max speed0.5m/sec The Hallite 15 rod seal has been well proven in many applications requiring a compact, low friction seal to work efficiently both at low and high pressures. The seal comprises a rubberised fabric U ring to give strength and durability, to which is moulded a rubber header. | 15 |
Max pressure | 300 Bar |
Temp range | -30°C to 100°C |
Max speed | 0.5m/sec |
18Max pressure500 Bar Temp range-30°C 100°C Max speed0.5m/sec Over the years the Hallite 18 has shown itself to be an effective and robust seal in a wide variety of applications. Comprising a rubberised fabric U form base to which is bonded a rubber energiser, the seal section is pre-loaded by the housing when installed to ensure effective sealing at low pressure. | 18 |
Max pressure | 500 Bar |
Temp range | -30°C to 100°C |
Max speed | 0.5m/sec |
511Max pressure350 Bar Temp range-40°C 110°C Max speed0.5m/sec The Hallite 511 is a standard profile loaded U-cup with precision trimmed sealing lips manufactured in either a polyurethane or polyester shell energised by a high quality O-ring and designed for common North American square grooves. | 511 |
Max pressure | 350 Bar |
Temp range | -40°C to 110°C |
Max speed | 0.5m/sec |
512Max pressure350 Bar Temp range-40°C 110°C Max speed0.5m/sec The Hallite 512 is a standard profile loaded U-cup with precision trimmed sealing lips manufactured in either a polyurethane or polyester shell energised by a high quality O-ring and designed for common North American grooves. The precision trimmed sealing lips ensure optimum sealing action. | 512 |
Max pressure | 350 Bar |
Temp range | -40°C to 110°C |
Max speed | 0.5m/sec |
513Max pressure350 Bar Temp range-40°C 110°C Max speed0.5m/sec The Hallite 513 is a standard profile loaded U-cup with precision trimmed sealing lips manufactured in either a polyurethane or polyester shell energised by a high quality O-ring and designed for common North American grooves. | 513 |
Max pressure | 350 Bar |
Temp range | -40°C to 110°C |
Max speed | 0.5m/sec |
601Max pressure400 Bar Temp range-45°C 110°C Max speed1m/sec The Hallite 601 high-performance, general purpose, single-acting U-ring rod or piston seal is designed to provide a dry sealing solution in light and medium-duty applications and manufactured in Hythane® 181, Hallite’s high-performance polyurethane, for easy installation and excellent low temperature performance. | 601 |
Max pressure | 400 Bar |
Temp range | -45°C to 110°C |
Max speed | 1m/sec |
606Max pressure400 Bar Temp range-45°C 110°C Max speed1m/sec The Hallite 606 single-acting, single lip asymmetric piston seal is designed with precision trimmed sealing lips to provide effective bore sealing in light and medium-duty applications. The seal can be considered for use in heavy-duty applications when used with a suitable full depth back-up ring. | 606 |
Max pressure | 400 Bar |
Temp range | -45°C to 110°C |
Max speed | 1m/sec |
656Max pressure400 Bar Temp range-45°C 110°C Max speed1m/sec Hallite’s 656 is an asymmetric single acting piston seal. Similar in design to the Hallite 621 rod seal, Hallite’s 656 offers excellent sealing in light, medium and heavy duty single acting applications. Manufactured in Hallite’s high performance polyurethane Hythane® 181, Hallite 656 is an extremely flexible seal making installation easy. | 656 |
Max pressure | 400 Bar |
Temp range | -45°C to 110°C |
Max speed | 1m/sec |
659Max pressure400 Bar Temp range-45°C 110°C Max speed1m/sec This twin lip, asymmetric, single-acting piston seal with precision trimmed sealing lips provides a dry sealing solution in light and medium-duty application. The sealing lips are trimmed at an angle to give optimal rod sealing performance. | 659 |
Max pressure | 400 Bar |
Temp range | -45°C to 110°C |
Max speed | 1m/sec |
71Max pressure700 Bar Temp range-30°C 100°C Max speed0.5m/sec The Hallite 71 single acting fluid seal assembly consists of the standard Hallite 18 single acting fluid seal and the Hallite 62 L shaped bearing ring (wear ring). | 71 |
Max pressure | 700 Bar |
Temp range | -30°C to 100°C |
Max speed | 0.5m/sec |
P16Max pressure500 Bar Temp range-45°C 200°C Max speed15m/sec The Hallite P16 is a single-acting, o-ring energized, low-friction piston seal especially useful where smooth movement and location accuracy is required. The P16 design is based on the very successful R16 rod-seal design which has been proven in the market to be an excellent seal. | P16 |
Max pressure | 500 Bar |
Temp range | -45°C to 200°C |
Max speed | 15m/sec |