High-Temperature Threadlockers

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Breakaway Torque

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100 in·lbf to 149 in·lbf

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Begins to Harden

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31 Products

High-Temperature Threadlockers


Bottle	Tube

Prevent heat from loosening fasteners with threadlockers that resist temperatures up to 450° F. You only need a few drops to evenly coat threads. As you twist parts together, exposure to air is blocked and the threadlocker begins to harden.

Primer (sold separately) cleans the surface and decreases the time to reach full strength. It is recommended when working with aluminum, stainless steel, and titanium; black-oxide finishes; and cadmium and zinc coatings.

Medium Locking Strength—Strong enough for most applications, these threadlockers hold firmly until you break their bond with a combination or ratchet wrench.

High Locking Strength—Keep fasteners firmly in place in motors, pumps, and other applications subjected to heavy shock and vibration. Breaking the bond of these threadlockers requires a propane torch, heat gun, or induction heater. As a result, they shouldn't be used in setups that you disassemble often.

Thick Liquid—Fill larger gaps than thin liquids, so they're best for coarse or worn threads.

		Container
	Mfr. Model No.	Size, fl. oz.	Type	Begins to Harden, min.	Color	Breakaway Torque, in·lbf	Temp. Range, ° F	Consistency	Viscosity, cP	Reaches Full Strength, hr.		Each
Medium Locking Strength







				Loctite®

				246	0.34	Bottle	20	Blue	100	-65 to 450	Thick Liquid	3,000	24	91458A480	000000


				246	1.69	Bottle	20	Blue	100	-65 to 450	Thick Liquid	3,000	24	91458A490	00000
				246	8.45	Bottle	20	Blue	100	-65 to 450	Thick Liquid	3,000	24	91458A550	000000




						Vibra-Tite

						123	0.06	Tube	5	Blue	170	-65 to 450	Thick Liquid	2,600	24	91458A235	0000


						123	0.34	Bottle	5	Blue	170	-65 to 450	Thick Liquid	2,600	24	91458A238	0000
						123	1.69	Bottle	5	Blue	170	-65 to 450	Thick Liquid	2,600	24	91458A504	00000
						123	8.45	Bottle	5	Blue	170	-65 to 450	Thick Liquid	2,600	24	91458A607	00000


						High Locking Strength







										Loctite®

										266	0.34	Bottle	10	Red	265	-65 to 450	Thick Liquid	3,750	24	91458A570	00000


										266	1.69	Bottle	10	Red	265	-65 to 450	Thick Liquid	3,750	24	91458A580	00000
										266	8.45	Bottle	10	Red	265	-65 to 450	Thick Liquid	3,750	24	91458A590	000000
										272	1.69	Bottle	30	Red	200	-65 to 450	Thick Liquid	9,500	24	91458A650	00000
										272	8.45	Bottle	30	Red	200	-65 to 450	Thick Liquid	9,500	24	91458A890	000000
										272	33.8	Bottle	30	Red	200	-65 to 450	Thick Liquid	9,500	24	91458A835	000000

High-Temperature Thread Sealants

These sealants have high locking strength, so they work in demanding applications, such as securing mounting studs in motor housings. They also withstand applications with large temperature swings.

Heat—Heat cure sealant requires heat of at least 212° F to harden. Above 300° F, the sealant hardens in about 15 minutes. For temperatures below 300° F, it may take up to 4 hours to harden. It requires both heat and a hand tool to unthread.

Room Temperature—Room-temperature cure sealants must be mixed with water for use; they harden as the water evaporates. Mix about five parts powdered-sealant to one part water to form a thick consistency similar to peanut butter. Hardening can be accelerated with heat; do not heat to above 200° F. They require a hand tool to unthread.

1,000° F Maximum Temperature—1000° F max. temp. sealants expand as they harden.

1,500° F Maximum Temperature—1500° F max. temp. sealants are for use on cement-lined pipe joints prior to welding. The heat from the welding torch helps them begin to harden.

Cannot Be Sold To—Sealants that cannot be sold to the listed regions are restricted due to local VOC (Volatile Organic Compounds) regulations.

		Container					Max. Pressure, psi		Temp., ° F
	Mfr. Model No.	Size, fl. oz.	Type	Begins to Harden	Reaches Full Strength, hr.	Mix Ratio	For Fluids	For Gases	Min.	Max.	For Max. Thread Dia.	Consistency	Food Industry Std.	Mil. Spec.	For Use On	Color	Cannot Be Sold To		Each
Medium Locking Strength







				Heat Cure Loctite®

				5540	16	Can	10 sec.	12	—	2,900	2,900	-40	1,300	4"	Thin Liquid	—	MIL-S-15204	Pipe, Aluminum, Brass, Bronze, Cast Iron, Concrete, Iron, Metal, Stainless Steel, Steel, Tin, Titanium, Galvanized Iron, Galvanized Steel	Brown	—	1959A101	0000000


				5550	32	Can	10 sec.	2	—	5,000	5,000	-40	1,500	6"	Paste	—	MIL-S-15204	Aluminum, Brass, Bronze, Cast Iron, Concrete, Iron, Metal, Stainless Steel, Steel, Tin, Titanium, Galvanized Iron, Galvanized Steel	Brown	—	1959A102	000000


				High Locking Strength







								Heat Cure Sealants

								—	32	Can	15 min.	4	—	10,000	2,000	-310	1,500	2"	Thick Liquid	—	MIL-S-15204	ABS, Aluminum, Brass, Bronze, Cast Iron, Copper, CPVC, PETG, PVC, PVDF, Stainless Steel, Steel	Black	Los Angeles County, CA; Orange County, CA; Riverside County, CA; San Bernardino County, CA	1959A31	000000




										Room Temperature Cure X-Pando

										—	14	Can	60 min.	24	5:1	5,000	5,000	-300	1,000	6"	Powder	NSF/ANSI 61	—	Aluminum, Brass, Bronze, Cast Iron, Copper, Stainless Steel, Steel	Gray	—	6818K11	00000


										—	14	Can	60 min.	24	5:1	5,000	5,000	-300	1,500	6"	Powder	NSF/ANSI 61	—	Aluminum, Steel	Gray	—	6818K24	00000
										—	70	Can	60 min.	24	5:1	5,000	5,000	-300	1,000	6"	Powder	NSF/ANSI 61	—	Aluminum, Brass, Bronze, Cast Iron, Copper, Stainless Steel, Steel	Gray	—	6818K12	00000
										—	70	Can	60 min.	24	5:1	5,000	5,000	-300	1,500	6"	Powder	NSF/ANSI 61	—	Aluminum, Steel	Gray	—	6818K26	00000

High-Temperature Paste Threadlockers

Syringe

Keep fasteners joined at temperatures up to 650° F. Squeeze this paste onto threads and it won’t drip, even when applying to parts installed vertically or overhead. The bond begins to harden when you thread coated surfaces together, blocking exposure to air.

Medium Locking Strength—Strong enough for most applications, these threadlockers hold firmly until you break their bond with a combination or ratchet wrench.

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, min.	Color	Breakaway Torque, in·lbf	Temp. Range, ° F	Consistency	Viscosity	Reaches Full Strength, hr.		Each
Medium Locking Strength







				Loctite®

				2422	1.06	Syringe	30	Blue	100	-65 to 650	Paste	Not Rated	24	91458A280	000000


				High Locking Strength







								Loctite®

								2620	1.06	Syringe	30	Red	160	-65 to 650	Paste	Not Rated	24	91458A270	00000

Threadlockers

Bottle

The most commonly used threadlockers, these liquids prevent loosening due to vibration, bending, or improper torque. You only need a few drops to evenly coat threads. As you twist parts together, exposure to air is blocked and the threadlocker begins to harden.

Low Locking Strength—Often used in setups that require frequent disassembly, these threadlockers are easily released with the turn of a screwdriver or L-key. They give fasteners additional hold to keep them secure against light shock and vibration.

Medium Locking Strength—Strong enough for most applications, these threadlockers hold firmly until you break their bond with a combination or ratchet wrench.

Thin Liquid—Seep into tight spaces better than thick liquids, so they're best for fine threads.

Military Specification—Mil. Spec. threadlockers are manufactured and tested to strict U.S. military standards.

		Container
	Mfr. Model No.	Size, fl. oz.	Type	Begins to Harden, min.	Color	Breakaway Torque, in·lbf	Temp. Range, ° F	Consistency	Viscosity, cP	Mil. Spec.	Reaches Full Strength, hr.		Each
Low Locking Strength







				Loctite®

				222	0.34	Bottle	20	Purple	50	-65 to 300	Thin Liquid	1,200	—	24	1810A27	000000


				222	1.69	Bottle	20	Purple	50	-65 to 300	Thin Liquid	1,200	—	24	1810A28	00000


				Medium Locking Strength







								Loctite®

								242	33.8	Bottle	10	Blue	70	-65 to 300	Thin Liquid	1,150	MIL-S-46163	24	1810A33	000000


								High Locking Strength







												Loctite®

												271	33.8	Bottle	10	Red	250	-65 to 300	Thin Liquid	500	MIL-S-46163	24	1810A89	000000

Retaining Compounds for Oily Loose-Fitting Parts

Bottle

Even on oily surfaces, these retaining compounds keep their hold. Use them to fill gaps up to 0.015" to secure worn cylindrical metal parts such as shafts, bearings, and press-fit assemblies. These retaining compounds begin to harden once coated surfaces are pressed together, blocking exposure to air. They meet NSF/ANSI 61 safety standards for use with drinking water systems.

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	Max. Gap Size Filled	Begins to Harden, min.	Reaches Full Strength, hr.	Temp. Range, ° F	Consistency	Viscosity, cP	Shear Strength, psi	Color	Food Industry Std.		Each
High Locking Strength







				Loctite® Retaining Compounds

				680	33.8	Bottle	0.015"	4	24	-65 to 300	Thick Liquid	1,250	2,800	Green	NSF/ANSI 61	1810A43	0000000

High-Temperature Wicking Threadlockers


	Bottle

Resistant to high temperatures, these threadlockers maintain a strong grip in environments up to 450° F. The thin liquid seeks out tiny gaps to bond fasteners that are already installed.

Thin Liquid—Seep into tight spaces better than thick liquids, so they're best for fine threads.

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, min.	Color	Breakaway Torque, in·lbf	Temp. Range, ° F	Consistency	Viscosity, cP	Reaches Full Strength, hr.		Each
High Locking Strength







				Loctite®

				294	1.69	Bottle	6	Green	115	-65 to 450	Thin Liquid	30	24	91458A950	000000

Lubricating Threadlockers

Bottle

Reduce friction to protect threads and ease installation. These threadlockers are often used on large fasteners, which can be prone to seizing. They begin to harden when you thread coated surfaces together, blocking exposure to air.

Thick Liquid—Fill larger gaps than thin liquids, so they're best for coarse or worn threads.

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, min.	Color	Breakaway Torque, in·lbf	Temp. Range, ° F	Consistency	Viscosity, cP	Reaches Full Strength, hr.		Each
High Locking Strength







				Loctite®

				2047	1.69	Bottle	90	Black	375	-65 to 300	Thick Liquid	7,000	24	91458A410	000000

Wicking Threadlockers


	Bottle

Secure fasteners that are already installed—these threadlockers are thin enough to flow into tiny gaps.

Thin Liquid—Seep into tight spaces better than thick liquids, so they're best for fine threads.

Military Specification—Mil. Spec. threadlockers are manufactured and tested to strict U.S. military standards.

		Container
	Mfr. Model No.	Size, fl. oz.	Type	Begins to Harden, min.	Color	Breakaway Torque, in·lbf	Temp. Range, ° F	Consistency	Viscosity, cP	Mil. Spec.	Reaches Full Strength, hr.		Each
Low Locking Strength







				Loctite®

				220	0.34	Bottle	6	Blue	20	-65 to 300	Thin Liquid	20	MIL-S-46163	24	1810A315	000000


				220	8.45	Bottle	6	Blue	20	-65 to 300	Thin Liquid	20	MIL-S-46163	24	1810A31	000000