SIL CanGuard SI65BU57 O-Ring, Size: -004
Material: SIL CanGuard SI65BU57 O-Ring
Size: AS568 -004 O-Ring
Part Number: SI65BU57-OR-004
CanGuard™ (Canyon Components)
SI65BU57
Silicone (VMQ)
65
Shore A
EMI Silver and Aluminum Filled
Color: Blue
Detailed Description
SI65BU57-OR-004 is a Blue, 65 Shore A, Silicone (VMQ) O-Ring made from CanGuard™ (Canyon Components). It is a 75 durometer Silicone (VMQ). CanGuard™ (Canyon Components) SI65BU57 is manufactured with the following features & specifications: EMI Silver and Aluminum Filled. SI65BU57-OR-004 is AS568 size -004 O-Ring also referred to as 1.78mm (Cross Sectional Diameter (CS)) x 1.78mm (Inside Diameter (ID)).
Material: 65 Durometer SIL CanGuard SI65BU57 O-Ring
Size: AS568 -004, 1.78mm CS X 1.78mm ID (0.070" CS X 0.070" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | SI65BU57 |
| Brand | CanGuard™ (Canyon Components) |
| Material | Silicone (VMQ) |
| Color | Blue |
| Durometer | 65 Shore A Hardness |
| High Temperature | 160 °C / 320 °F |
| Low Temperature | -55 °C / -67 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | AS568 |
| Size | -004 |
| Cross Section (CS) | 1.78 mm / 0.070 in |
| Inside Diameter (ID) | 1.78 mm / 0.070 in |
| Other Specifications | |
EMI Silver and Aluminum Filled | |
SI65BU57 is a 65 shore A blue conductive silicone compound from CanGuard formulated with silver plated aluminum filler for high performance EMI and RFI shielding. This material meets MIL-DTL-83528 Type B QPL requirements and is well suited for O-rings and gaskets used in aerospace, military, and electronic enclosure applications where electromagnetic interference control is critical. It offers excellent shielding effectiveness along with resistance to salt air environments, making it ideal for harsh operating conditions. With a service temperature range of -55°C to 160°C, SI65BU57 delivers reliable sealing and electrical performance, though it has lower abrasion resistance and is not recommended for brake fluid or NBC washdown systems.
Conductive silicone (VMQ) materials are specialized elastomers designed to provide both environmental sealing and electrical conductivity in O-rings and gaskets. By incorporating conductive fillers such as silver plated aluminum, these materials enable effective EMI and RFI shielding while maintaining the flexibility and temperature resistance of silicone rubber. They are commonly used in aerospace, defense, telecommunications, and electronics industries where signal integrity and electromagnetic protection are essential. Compared to standard silicone, conductive grades prioritize electrical performance over mechanical wear resistance, making them best suited for static sealing applications.
Keywords: SI65BU57, SI 65BU57, SI-65BU57, SI65 BU57, conductive silicone EMI gasket, silver aluminum silicone, MIL-DTL-83528 Type B elastomer, EMI shielding O-rings, RFI shielding gasket material, CanGuard conductive silicone, aerospace EMI seals, salt air resistant elastomer, electronics enclosure gasket, Datasheet, TDS, Test Report, MTR, MSDS, SDS
