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Color Color |
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![]() | Red |
Container Size Container Size |
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Container Type Container Type |
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![]() | Bottle |
Locking Strength Locking Strength |
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Manufacturer Manufacturer |
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Manufacturer Model Number Manufacturer Model Number |
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For Use Outdoors For Use Outdoors |
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For Use With For Use With | Show |
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For Use With For Use With | Hide |
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Warning: Products have one, but not necessarily all, of the selected characteristics.
Cure Type Cure Type |
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For Maximum Thread Diameter For MaximumThread Diameter |
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Type Type |
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Consistency Consistency |
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Maximum Temperature Maximum Temperature |
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Minimum Temperature Minimum Temperature |
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Begins to Harden Begins to Harden |
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Mixing Required Mixing Required |
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Clarity Clarity |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Reaches Full Strength Reaches Full Strength |
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Certificate Certificate |
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![]() | Material Certificate with Traceable Lot Number and Product Shelf Life |
About Sealant Flexibility
More
Thread Sealants for Refrigeration Systems

For use in refrigeration systems and applications exposed to strong chemicals, these sealants have excellent solvent resistance. They’re anaerobic, so they don’t begin to harden until coated surfaces are threaded together, blocking exposure to air. Sealants have medium locking strength, which prevents threads from loosening due to vibration and shock. They require a hand tool to unthread.
Certificates with a traceable lot number and product shelf life are available for these products. Download certificates from ACTIVITY after your order ships.
Container | Max. Pressure, psi | |||||||||||
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Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | For Fluids | For Gases | Temp. Range, °F | For Max. Thread Dia. | Consistency | Color | Each | |
Medium Locking Strength | ||||||||||||
Loctite® Sealants | ||||||||||||
554 | 0.3 | Bottle | 10 sec. | 24 hrs. | 10,000 | 10,000 | -65° to 300° | 3" | Thick Liquid | Red | 00000000 | 000000 |
554 | 8.4 | Bottle | 10 sec. | 24 hrs. | 10,000 | 10,000 | -65° to 300° | 3" | Thick Liquid | Red | 00000000 | 000000 |