Curved Backup Ring - NBR
SKU:
574-139
574-139 90A Buna-N Rubber Backup Ring | 2 3/16 in ID 3/32 in CS
Parback® backup ring with a curved cross-section.
Parbaks are contoured on one face to minimize distortion of the o-ring when under pressure. Parbaks should be installed with the contoured face against the o-ring, but reversal does no harm.
$1.05 / EA
90A Durometer | Buna-N Rubber Material | 2 3/16 in Nominal Inner Diameter | 3/32 in Cross Section | Backup Ring
Features
- Excellent extrusion resistance
- Easily stretched for installation
- Lubrication is enhanced by rubber which absorbs system fluid and does not plate out on rubbing surfaces
Export To PDF
Item Specifications
-
3/32 Inch
-
90A
-
Parker
-
NBR
-
Buna-N Rubber
-
240 °F
-
-40 °F
-
0.053 Inch
-
2 3/16 Inch
-
2 3/8 Inch
-
Varies According to Diametral Clearance
-
15 Years
-
574
-
-40° to +240°F
-
0.045 Inch
-
±0.003
-
inch
-
0.00 lbs per EA
