DESCRIPTION
The RB-621 is the Hallite 621 and is a top of the range metric high pressure rod seal. The design of the seal incorporates a unique profiled NBR energizer to ensure complete lip actuation under all pressure conditions and to cushion the seal against shock loadings. This seal also incorporates a polyacetal anti-extrusion ring.
The shell is molded in Hallite’s high performance polyurethane Hythane 181, ensuring flexibility for installation and performance at low temperatures. This seal also benefits from Hallite's twin lip profile for dry rod sealing.
SEAL INFORMATION
Material Type (Primary Seal): POLYURETHANE
Material Type (Energizer): 70A NITRILE
Material Type (Backup Rings): POLYACETAL
Durometer (Shore A): 93
Temperature Range (F): -50 TO 230
Max Pressure (psi): 10000
Extrusion Gap at Various Pressures (mm):
- 2,400 PSI: 1.00
- 3,750 PSI: 0.80
- 6,000 PSI: 0.60
- 7,500 PSI: 0.40
- 10,000 PSI: 0.25
Max Speed (ft/sec): 3.0
Mating Surface Roughness - Ra (µm) - DYNAMIC: 0.1<>0.4
Mating Surface Roughness - Ra (µm) - STATIC: 1.6 MAX
Part Number Definition (Metric): MUH-(ROD DIAMETER)X(OD)X(HT)RB-621
Additional Part Number Definition (Metric): 40 X 50 X 10 = MUH-40X50X10RB-621