Image shown is representative and may differ from the actual product in size, proportions, and color shade
3.500 in
(88.90 mm)
7.500 in
(190.50 mm)
4
0.750 in
(19.05 mm)
6.000 in
(152.40 mm)
1/4"
SIL Parker SM355-75 Full Face Gasket, Size: 150#-3"-FF-1/4"
Material: SIL Parker SM355-75 Full Face Gasket
Size: 150#-3"-FF-1/4" Full Face Gasket
Part Number: SM355-75-150#-3"-FF-1/4"
Color: Red
Detailed Description
SM355-75-150#-3"-FF-1/4" is a Red, 75 Shore A, Silicone (VMQ) Full Face Gasket 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. SM355-75-150#-3"-FF-1/4" is a size 3, 150#-FF ASME Full Face Gasket. Material: 75 Durometer SIL Parker SM355-75 Full Face Gasket Size: 150#-3"-FF-1/4", 3 Pipe Size X 88.9mm ID X 190.5mm OD X 4 Bolt Qty X 19.050mm Bolt Dia. X 152.400mm Bolt Circle X 1/4" Thickness
| 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 | |
| Type | Full Face Gasket |
| Size | 150#-3"-FF-1/4" |
| Pipe Size | 3 |
| ID | 88.90 mm / 3.500 in |
| OD | 190.50 mm / 7.500 in |
| Bolt Qty | 4 |
| Bolt Dia. | 19.05 mm / 0.750 in |
| Bolt Circle | 152.40 mm / 6.000 in |
| Thickness | 1/4" |
| 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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