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  • 产品名称: ROD BUFFER SEAL FOR HYDRAULIC APPLICATIONS (BR)
  • 浏览次数: 36

The BR Profile is a compact rod seal designed to act as a buffer seal for the primary rod seal. As a buffer seal, the BR profile provides the majority of the rod sealing performance while allowing fluid to bypass and energize the primary rod seal. Fluid located between the BR profile and the rod seal will relieve back into the cylinder by flowing past the BR profile's flexible static side lip and slotted pedestals. This relieving, or check valve function, allows the BR profile and primary rod seal to work as a sealing system without danger of developing a pressure trap. As a sealing system, the BR profile and primary rod seal provide optimal performance in the most difficult applications. The heel design incorporates a positively actuated back-up ring for anti-extrusion and extended high pressure sealing capability. 

Available in Parker's proprietary Resilon® polyurethane, the BR Profile provides 
• Long life
• Extrusion resistance
• Low compression set
• Shock load resistance

Standard Materials: 
• P4300A90 Resilon® polyurethane; Temp -65 / +275F; Pressure* 5000 psi; Surface speed <1.6 ft/s
• P4301A90 Resilon® polyurethane; Temp -35 / +275F (+225F in water); Pressure* 5000 psi; Surface speed <1.6 ft/s 

*Pressure range shown with positively actuated back-up to 5,000 psi when used with tight tolerance wear rings. See Engineering Section (Section2) of Parker's Fluid Power Seal Design Guide, Catalog EPS5370 for details. 

Back-up Ring: The positively actuated back-up ring located in the heel is made of Parker compound W4655, Nylon 6,6 with MoS2. 
• W4655 Nylon; Temp -65 / +250F; Pressure* 10,000 psi; Surface speed <1.6 ft/s 

Alternate Materials: For applications that may require an alternate material, please contact your Parker EPS representative.

Typical applications: 
• Dynamic sealing of hydraulic cylinders and equipment components, including: Actuators, pumps, and valves. 

最大压力 (PSI)
10,000
最低工作温度 (F)
-65
最高工作温度 (F)
250
流体兼容性
Oils, Water
颜色
Tan, Aqua
热应用 (F)
Varies depending on material
聚合物系列
TPU (Polyurethane)
认证
none
符合认证
none
行业标准
none
媒介
Hydraulic
最大表面速度 (FPM)
100 (0.5 m/s)
备用环材料
W4655, Nylon

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