
Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.139 in
(3.53 mm)
10.380 in
(263.65 mm)

FSIL FS50BU21 O-Ring, Size: 3.53X263.65
Material: FSIL FS50BU21 O-Ring
Size: Metric 3.53X263.65 O-Ring
Part Number: FS50BU21-OR-3.53X263.65
FS50BU21
Fluorosilicone (FVMQ, FSIL)
50
Shore A
Silicone Oil Filled
Color: Blue
Detailed Description
FS50BU21-OR-3.53X263.65 is a Blue, 50 Shore A, Fluorosilicone (FVMQ, FSIL) O-Ring. It is a 50 durometer Fluorosilicone (FVMQ, FSIL). FS50BU21 is manufactured with the following features & specifications: Silicone Oil Filled. FS50BU21-OR-3.53X263.65 is Metric size 3.53X263.65 O-Ring also referred to as 3.53mm (Cross Sectional Diameter (CS)) x 263.65mm (Inside Diameter (ID)). Material: 50 Durometer FSIL FS50BU21 O-Ring Size: Metric 3.53X263.65, 3.53mm CS X 263.65mm ID (0.139" CS X 10.380" ID)

| Technical Specification | Value |
|---|---|
| Compound Number | FS50BU21 |
| Material | Fluorosilicone (FVMQ, FSIL) |
| Color | Blue |
| Durometer | 50 Shore A Hardness |
| High Temperature | 175 °C / 347 °F |
| Low Temperature | -75 °C / -103 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | Metric |
| Size | 3.53X263.65 |
| Cross Section (CS) | 3.53 mm / 0.139 in |
| Inside Diameter (ID) | 263.65 mm / 10.380 in |



