It is important that the buffer seal allows adequate lubrication of the main seal and does not cause a pressure trap between itself and the main seal. The Hallite designs of buffer seals have features that help to prevent this possibility.
Rod buffer seals
The primary purpose of the buffer seal is to protect the main rod seal from the effects of shock pressure loading.
 416Max pressure300 Bar Temp range-30°C 100°C Max speed4m/sec It has a bronze filled PTFE ring with a pre-loaded lip energised by an O-Ring. The seal is designed to protect the primary rod seal from pressure spikes in the cylinder. | 416 |
| Max pressure | 300 Bar |
| Temp range | -30°C to 100°C |
| Max speed | 4m/sec |
 653Max pressure700 Bar Temp range-45°C 110°C Max speed1m/sec The Hallite 653 single-acting rod buffer seal is designed to be used in conjunction with a high-performance rod seal, such as the Hallite 605 and 621, to protect the primary seal from shock pressure loading and high frequency pressure spikes in the hydraulic system. | 653 |
| Max pressure | 700 Bar |
| Temp range | -45°C to 110°C |
| Max speed | 1m/sec |
 660Max pressure700 Bar Temp range-45°C 110°C Max speed1m/sec The Hallite 660 single-acting rod buffer seal is designed to be used in conjunction with high-performance rod seal, such as the Hallite 605, 663, or 673, to protect the primary seal from shock pressure loading and high frequency pressure spikes in the hydraulic system. | 660 |
| Max pressure | 700 Bar |
| Temp range | -45°C to 110°C |
| Max speed | 1m/sec |
 SRBMax pressure600 Bar Temp range-45°C 200°C Max speed4m/sec The Hallite SRB is a single-acting, low-friction rod buffer seal, designed to be utilized in conjunction with a primary pressure seal. The buffer is designed from proprietary Armorlene® material face ring paired with a specially profiled energizer and an integrated anti-extrusion ring. | SRB |
| Max pressure | 600 Bar |
| Temp range | -45°C to 200°C |
| Max speed | 4m/sec |
 SRSMax pressure400 Bar Temp range-45°C 200°C Max speed4m/sec The Hallite SRS is a single-acting, low-friction rod buffer seal, designed to be utilized in conjunction with a primary pressure seal. The buffer is designed from proprietary Armorlene® material face ring paired with a specially profiled energizer. | SRS |
| Max pressure | 400 Bar |
| Temp range | -45°C to 200°C |
| Max speed | 4m/sec |
