U-CUP NEOFAB INCH

DESCRIPTION

The PB-F is a compact low-friction seal with the advantage of an external anti-extrusion ring. A rubberized fabric base, which gives strength and durability, and a rubber header are molded together forming the seal. It is designed to have a controlled pre-load across the angled rubber lips to ensure a good seal at low pressure. 

The seal becomes more effective as the pressure increases and the rubberized fabric deforms to the housing to increase the seal contact area. The surface of the fabric has pockets which retain lubrication to reduce friction and wear. 

The RB-F has a reinforced plastic anti-extrusion ring at the external heel of the seal to protect it against damage by extrusion and to allow a larger clearance between the piston and cylinder bore. 

SEAL INFORMATION

Material Type (Primary Seal): NITRILE 

Material Type (Base): FABRIC-REINFORCED NITRILE 

Material Type (Support Rings): POLYACETAL 

Durometer (Shore A): 80 

Temperature Range (F): -22 TO 212 

Max Pressure (psi): 5800 

Extrusion Gap at Various Pressures (in):

• 1,500 PSI: 0.035
• 2,400 PSI: 0.032
• 3,500 PSI: 0.028
• 5,800 PSI: 0.021

Max Speed (ft/sec): 1.5 

Mating Surface Roughness - Ra (µin) - DYNAMIC: 4<>16 

Mating Surface Roughness - Ra (µin) - STATIC: 63 MAX 

Part Number Definition (Inch): UH-(CS)(ID)(HT)PB-F 

Additional Part Number Definition (Inch): 2 X 2-1/2 X 3/8 = UH-25002000375PB-F