Brown Loctite | McMaster-Carr

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Loctite®

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	Color Color

	Brown
	Red Brown

	Container Type Container Type


Bottle	Brush-Top Can

Tube

	For Use On For Use On

	Manufacturer Model Number Manufacturer Model Number

	Locking Strength Locking Strength

High

Medium

Low

	Type Type

Adhesive

Thread Sealant

Threadlocker

	Maximum Temperature Maximum Temperature

Less than 500° F

	For Maximum Thread Diameter For Maximum Thread Diameter

1/4"

3/8"

	Mixing Required Mixing Required

	Container Size Container Size

	Begins to Harden Begins to Harden

	Consistency Consistency

Thick Liquid

Thin Liquid

	Clarity Clarity

Opaque

	Minimum Temperature Minimum Temperature

-74° to -50° F

	Cure Type Cure Type

Anaerobic

Activator

	Reaches Full Strength Reaches Full Strength

24 hrs.

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Formulation Formulation

Acrylic

	For Joining For Joining

	Breakaway Torque Breakaway Torque

35 in.-lbs.

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15 Products

No-Mix Acrylic Structural Adhesives

No need to mix these acrylics—apply adhesive to one surface and activator to the other, then bring surfaces together to bond. Acrylics bond to the widest range of materials, especially plastics, and require the least amount of surface preparation.

325 forms flexible bonds that withstand rapid changes in temperature.

	Container				Strength
Mfr. Model No.	Size, fl. oz.	Type	Begins to Harden	Reaches Full Strength	Shear, lbs./sq. in.	Peel, lbs./in. wd.	Consistency (Viscosity)	Temp. Range, °F	Color	For Joining	Requires Loctite® Activator No.		Each
Loctite® Adhesives
325	1.69	Bottle	5 min.	24 hrs.	1,600	Not Rated	Thick Liquid (20,000 cP)	-65° to 300°	Brown	Metal, Plastic, Rubber, Glass	7075, 7387	00000000	000000
326	1.69	Bottle	60 sec.	24 hrs.	2,200	Not Rated	Thick Liquid (17,000 cP)	-65° to 250°	Brown	Metal, Plastic, Rubber, Glass	7649	0000000	00000

Activators and Primers

		Each
Loctite® 7387 (1.75 fl. oz. Brush-Top Bottle)	0000000	000000
Loctite® 7387 (4.5 oz. Aerosol Can)	0000000	00000
Loctite® 7649 (.88 oz. Aerosol Can)	0000000	00000
Loctite® 7649 (1.75 fl. oz. Bottle)	0000000	00000
Loctite® 7649 (4.5 oz. Aerosol Can)	0000000	00000
Loctite® 7649 (1-gal. Can)	0000000	000000

Adjustable Wicking Threadlockers

These threadlockers give a secure hold, but can be easily adjusted with hand tools. They can be removed without damaging countersunk fasteners, set screws, and other small fasteners. The thin consistency allows them to flow into small gaps, so you can apply them on fasteners that are already installed. These threadlockers begin to harden once coated surfaces are threaded together and exposure to air is blocked.

Certificates with a traceable lot number and product shelf life are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Container
Mfr. Model No.	Size, fl. oz.	Type	Begins to Harden	Reaches Full Strength	Temp. Range, °F	For Max. Thread Dia.	Consistency	Viscosity, cP	Breakaway Torque, in.-lbs.	Color		Each
Low Locking Strength
Loctite® Threadlockers
078	1.69	Bottle	6 hrs.	24 hrs.	-65° to 300°	1/4"	Thin Liquid	20	35	Brown	000000	000000

Thread Sealants

These thread sealants are anaerobic, so they don’t begin to harden until coated surfaces are threaded together, blocking exposure to air.

Sealants with medium locking strength prevent threads from loosening due to vibration and shock. They require a hand tool to unthread.

	Container				Max. Pressure, psi
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
542	1.7	Bottle	10 sec.	24 hrs.	10,000	10,000	-65° to 300°	1"	Thin Liquid	Brown	00000000	000000
571	8.5	Bottle	10 sec.	24 hrs.	10,000	10,000	-65° to 300°	3/8"	Thick Liquid	Brown	0000000	000000

Thread Sealants for Hydraulic and Compressed Air Systems

Formulated for high lubricity, these sealants allow easy assembly of finely threaded hydraulic and compressed air system components. They're also free of fillers that could contaminate system media. These sealants are anaerobic, so they don’t begin to harden until coated surfaces are threaded together, blocking exposure to air. Sealants with high locking strength work in demanding applications, such as securing mounting studs in motor housings. They require both heat and a hand tool to unthread.

	Container				Max. Pressure, psi
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
High Locking Strength
Loctite® Sealants
569	1.7	Bottle	10 sec.	24 hrs.	10,000	10,000	-65° to 300°	3/8"	Thin Liquid	Brown	00000000	000000
569	8.4	Bottle	10 sec.	24 hrs.	10,000	10,000	-65° to 300°	3/8"	Thin Liquid	Brown	00000000	000000

Water-Resistant Gasket Sealants

In or out of water, this sealant maintains its strength. Gasket sealants seal existing gaskets on metal parts.

Certificates with a traceable lot number and product shelf life are available for these products. Download certificates from ORDER HISTORY after your order ships.

Loctite® Sealants
Manufacturer Model Number	Container Size, fl. oz.	Begins to Harden, hrs.	Reaches Full Strength, hrs.	Temp. Range, °F	Color	For Use On		Each
MR 5923	16	4	24	-65° to 400°	Red Brown	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium	0000000	000000

Gasket Sealants for Rigid Seals

Form rigid seals on plumbing connections and duct. Gasket sealants seal existing gaskets on metal parts.

Certificates with a traceable lot number and product shelf life are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Container
Manufacturer Model Number	Size, fl. oz.	Type	Max. Gap Size Filled	Begins to Harden, hrs.	Reaches Full Strength, hrs.	Temp. Range, °F	Color	For Use On		Each
Loctite® Sealants
1	7	Tube	0.01"	2	24	-65° to 400°	Red Brown	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium	0000000	000000