BACKUP URETHANE INCH

DESCRIPTION

Our 8-U polyurethane back-up rings provide added extrusion resistance and increased pressure rating to u-cups and polypacks with only minimal increase in gland width.  

To help make the selection and ordering of the correct part number for the 8-U profile easy and efficient, the part numbering system used is very similar to that of our hydraulic u-cups and polypacks. 

We offer the 8-U back-up rings in either solid and split (-ST) styles 

SEAL INFORMATION

Durometer (Shore D): 55 

Temperature Range (F): -65 TO 220 

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

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

Part Number Definition (Inch): 8-(CS)(ID)-(HT)U-(STYLE) (-S FOR SOLID; -ST FOR SPLIT) 

Additional Part Number Definition (Inch): 2 X 2-1/2 X .062 = 8-25002000062U (OR 8-25002000062U-ST)