Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.210 in
(5.33 mm)
9.725 in
(247.02 mm)
SIL Parker SM355-75 O-Ring, Size: -376
Material: SIL Parker SM355-75 O-Ring
Size: AS568 -376 O-Ring
Part Number: SM355-75-OR-376
Color: Red
Detailed Description
SM355-75-OR-376 is a Red, 75 Shore A, Silicone (VMQ) O-Ring made from Parker Seal® (Parker). It is a 75 durometer Silicone (VMQ). Parker Seal® (Parker) SM355-75 is manufactured with the following features & specifications: FDA Compliant, USP Class VI. SM355-75-OR-376 is AS568 size -376 O-Ring also referred to as 5.33mm (Cross Sectional Diameter (CS)) x 247.02mm (Inside Diameter (ID)). Material: 75 Durometer SIL Parker SM355-75 O-Ring Size: AS568 -376, 5.33mm CS X 247.02mm ID (0.210" CS X 9.725" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | SM355-75 |
| Brand | Parker Seal® (Parker) |
| Material | Silicone (VMQ) |
| Color | Red |
| Durometer | 75 Shore A Hardness |
| High Temperature | 232 °C / 450 °F |
| Low Temperature | -51 °C / -60 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | AS568 |
| Size | -376 |
| Cross Section (CS) | 5.33 mm / 0.210 in |
| Inside Diameter (ID) | 247.02 mm / 9.725 in |
| Other Specifications | |
FDA Compliant | |
USP Class VI | |
USP <87> | |
Parker® SM355-75 is a rust colored VMQ silicone elastomer compound with a nominal hardness of 75 Shore A, developed to meet the qualification requirements of AMS 7267 for high reliability sealing applications. This silicone material is commonly used for O-rings, gaskets, and molded sealing components that require excellent temperature stability and long term environmental resistance. Parker SM355-75 is also manufactured to meet FDA and USP Class VI requirements, including USP <87>, making it suitable for regulated medical, pharmaceutical, and sanitary equipment applications.
With a broad operating temperature range of approximately -60°F to 450°F, this VMQ silicone compound performs well in environments exposed to hot air, weathering, ozone, water, glycols, alcohols, dilute acids, and bases. These properties make the material well suited for O-rings and gaskets used in medical devices, food processing equipment, and laboratory systems where temperature stability and material purity are important. Like many silicone elastomers, SM355-75 is not recommended for applications involving petroleum based oils, hydrocarbon fuels, chlorinated solvents, or highly dynamic sealing environments.
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