Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.157 in
(4.00 mm)
3.425 in
(87.00 mm)
SIL Parker S0383-70 O-Ring, Size: 4X87
Material: SIL Parker S0383-70 O-Ring
Size: Metric 4X87 O-Ring
Part Number: S0383-70-OR-4X87
Color: Red
Detailed Description
S0383-70-OR-4X87 is a Red, 70 Shore A, Silicone (VMQ) O-Ring made from Parker Seal® (Parker). It is a 70 durometer Silicone (VMQ). S0383-70-OR-4X87 is Metric size 4X87 O-Ring also referred to as 4mm (Cross Sectional Diameter (CS)) x 87mm (Inside Diameter (ID)). Material: 70 Durometer SIL Parker S0383-70 O-Ring Size: Metric 4X87, 4mm CS X 87mm ID (0.157" CS X 3.425" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | S0383-70 |
| Brand | Parker Seal® (Parker) |
| Material | Silicone (VMQ) |
| Color | Red |
| Durometer | 70 Shore A Hardness |
| High Temperature | 204 °C / 399 °F |
| Low Temperature | -115 °C / -175 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | Metric |
| Size | 4X87 |
| Cross Section (CS) | 4.00 mm / 0.157 in |
| Inside Diameter (ID) | 87.00 mm / 3.425 in |
Parker S0383-70 is a 70 Shore A rust-colored silicone (VMQ) compound engineered for O-rings and gaskets requiring extreme low-temperature flexibility and stable performance across wide thermal swings. With a service temperature range of -175°F to 400°F, this material excels in dry heat, moderate water exposure, and environments demanding strong resistance to ozone, aging, and weathering. S0383-70 meets A-A-59588 Class 1a and 1b, Grade 70, as well as AMS 3337 requirements, making it suitable for aerospace, military, and industrial sealing applications where reliability at very low temperatures is critical. It is compatible with fire-resistant hydraulic fluids (HFD-R and HFD-S) and limited petroleum oil exposure, but is not recommended for ketones, acids, silicone oils, or automotive and aircraft brake fluids. Canyon Components offers equivalent silicone materials that match or exceed the performance of Parker S0383-70 for extreme low-temperature O-ring and gasket applications.
Common relevant keywords:
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