FSIL FS70BU00 O-Ring, Size: -257
Material: FSIL FS70BU00 O-Ring
Size: AS568 -257 O-Ring
Part Number: FS70BU00-OR-257
FS70BU00
Fluorosilicone (FVMQ, FSIL)
70
Shore A
MIL-DTL-25988, AMS-R-25988, MIL-R- 25988 Class 1, Type 1 & 2.
Color: Blue
Detailed Description
FS70BU00-OR-257 is a Blue, 70 Shore A, Fluorosilicone (FVMQ, FSIL) O-Ring. FS70BU00 is manufactured with the following features & specifications: MIL-DTL-25988, AMS-R-25988, MIL-R- 25988 Class 1, Type 1 & 2.. FS70BU00-OR-257 is AS568 size -257 O-Ring also referred to as 3.53mm (Cross Sectional Diameter (CS)) x 148.82mm (Inside Diameter (ID)).
Material: FSIL FS70BU00 O-Ring
Size: AS568 -257, 3.53mm CS X 148.82mm ID (0.139" CS X 5.859" ID)

| Technical Specification | Value |
|---|---|
| Compound Number | FS70BU00 |
| Material | Fluorosilicone (FVMQ, FSIL) |
| Color | Blue |
| Durometer | 70 Shore A |
| High Temperature | 175 °C / 347 °F |
| Low Temperature | -75 °C / -103 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | AS568 |
| Size | -257 |
| Cross Section (CS) | 3.53 mm / 0.139 in |
| Inside Diameter (ID) | 148.82 mm / 5.859 in |
| Other Specifications | |
MIL-DTL-25988, AMS-R-25988, MIL-R- 25988 Class 1, Type 1 & 2. | |


