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Loctite RTV 5699 High-Performance Silicone Gasket Maker - Grey - 2.7-Fl Oz Tube

Loctite RTV 5699 High-Performance Silicone Gasket Maker - Grey - 2.7-Fl Oz Tube

Item # LT37464
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LT37464 - 2.7 Oz Loctite Adhesives and Sealants
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This gray silicone gasket maker forms a high-quality gasket that seals the space between matched parts to prevent leakage of automotive fluids and gases, such as air, oil, antifreeze and transmission fluid. Lowest Prices for the best tools from Loctite. Loctite RTV 5699 High-Performance Silicone Gasket Maker - Grey - 2.7-Fl Oz Tube part number LT37464 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (15)
  • Q & A (48)
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  • Why etrailer?

Loctite Tools - LT37464

  • Gasket Maker
  • Adhesives and Sealants
  • Loctite
  • 2.7 Oz

This gray silicone gasket maker forms a high-quality gasket that seals the space between matched parts to prevent leakage of automotive fluids and gases, such as air, oil, antifreeze and transmission fluid.


  • Seals joined parts in automotive systems - prevents leakage of antifreeze, air, oil and transmission fluid
  • Designed for high-torque applications
  • Exceeds manufacturers' warranty requirements
  • Won't corrode
  • Resists vibration
  • Made in the USA


  • Quantity: 2.7-fl oz tube (80 mL)
  • Tack-free cure (time required to dry past tacky state): 30 minutes
  • Full cure (time required to reach full set): 24 hours
  • Temperature range (endurance limits of the gasket maker): -75 F to 625 F
  • Ideal gap-filling capacity (gap sizes in which gasket maker performs best): 0.001" to 0.125"
  • Maximum gap-filling capacity (maximum gap size between joined parts): 0.240"

Applications: Valve covers, oil pans, intake manifold end seals, timing covers, water pumps and thermostat housings

Applied as a gel to just one surface of the parts to be joined, silicone gasket maker forms a seal between them, keeping out contaminants. Silicone gasket maker resists oil and shop fluids, vibration, heat, and flexing of parts, replacing many conventional gaskets. Parts joined by this silicone gasket maker can easily be removed. The old gasket material comes off effortlessly, simplifying future disassembly and reassembly.

Because of their ability to flex and compress, silicone gasket makers work better than other kinds of gasket makers when the parts to be joined are made of different materials, which have different rates of expansion and contraction when temperatures change. They also work better than other types of gasket makers on stamped metal parts that can flex and in situations where clearances can be large.

OEM symbol

This product is OEM specified: It is approved to meet specifications of original equipment manufacturers.

491982 Loctite RTV 5699 - Grey High Performance Silicone Gasket Maker

Alternate part number: 37464

Installation Details LT37464 Installation instructions

California residents: click here

Customer Reviews

Loctite RTV 5699 High-Performance Silicone Gasket Maker - Grey - 2.7-Fl Oz Tube - LT37464

Average Customer Rating:  4.9 out of 5 stars   (15 Customer Reviews)

This gray silicone gasket maker forms a high-quality gasket that seals the space between matched parts to prevent leakage of automotive fluids and gases, such as air, oil, antifreeze and transmission fluid.

- LT37464

I used this to seal my hitch install. Ok so I over did it, but the seal Is excellent. One tube is plenty for the 2 holes drilled in the spare tire well. If fact you could do several. It just shy of a tube of toothpaste size to give some perspective.

- LT37464

I received my product very quickly and in excellent condition! Every time I have ordered from E-Trailer, I have been extremely satisfied!

I used the product right away after I bought it... havent used it lately. It worked excellent for me. .
David P - 07/16/2016

- LT37464

I used this product to repair a leaking auger gearbox on my snowblower. It was critical that when repairs were completed the two part gear case be sealed completely. The directions were simple/straightforward and the product was easily applied. I used the snowblower all winter and the gearbox seal was perfect.

- LT37464

Only bad thing I have to say about it is don't know if it was shipping or a factory defect but followed directions on package and cut nozzle to desired size and started squeezing it on my transaxle and the locktite started coming out of the side of the tube. So I'm out of half the tube.

- LT37464

No problem !

- LT37464

Worked and fit just like described, good deal.

- LT37464

Great product! Great service!!

- LT37464

great stuff seals better then other bra nds

- LT37464

We use this product for creating gaskets where needed, and until now had no reasonably-priced supplier. We really appreciate your pricing and service. We had our last order of six units in three days!

- LT37464

The product was shipped as promised. Product worked fine and was of satisfactory quality

- LT37464

- LT37464

Exactly what I needed for the job I was doing.

- LT37464

Excellent product; can't find on store shelves. Pricing from this supplier is great.

- LT37464

Rose was very helpful. Thanks

- LT37464

works fine. Good service.


Ask the Experts about this Loctite Tools

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  • Is Locktite 5699 Gasket Maker. # LT37464 the Same as # 18718
    I searched the Loctite industrial site and the Locktite 5699 Grey Prod. # LT37464, is the same as the 18718 that you referenced. The product comes in different sizes containers and different container amounts to a case and the 18718 is just a variant of that.
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  • Compatibility of Locktite 569 on Portable Water System
    The Loctite RTV 5699 High-Performance Silicone Gasket Maker - Grey - 2.7-Fl Oz Tube # LT37464 can be used to seal a portable water system. The only thing to consider is the use of the water. If it isn't for potable drinking water, you wouldn't have any issue with this gasket maker. There are number of Loctite options available for potable drinking water but unfortunately we do not carry any of those options. If you are using threaded connections, I recommend using the Valterra PTFE...
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    Your 5-year-old electric trailer jack working sporadically could indeed be caused by loose or corroded internal wiring inside the housing. The presence of rust on the screws certainly suggests the possibility that corrosion could be at the heart of the problem. You could also have a loose ground connection. Some A-frame jacks use their mounting plate to make the ground at the trailer's steel frame. Sometimes that mounting area can get rusty and create intermittent operation. The force...
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  • Thread Pitch on end of Loctite RTV 5699 High-Performance Silicone Gasket Maker part # LT37464
    I reached out to Loctite and they confirmed that the thread pitch and size on the tube of Loctite RTV 5699 High-Performance Silicone Gasket Maker part # LT37464 is a #20 neck finish thread.
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    It can be a little challenging to find a good way to attach a wiring connector to a trailer hitch that has the hidden crosstube so since it sounds like you're wanting to tow with your 2020 Acura MDX I do recommend going with the Draw-Tite # 75225 because they do have that attached bracket to make it a whole lot easier plus it looks really clean too. For wiring it's hard to beat the T-One # 118628 simply because it has the highest amp ratings and we have found the Tekonsha wiring harnesses...
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    The installation of the Furrion Replacement RV Power Inlet - 30 Amp Twist Lock - White # F30ITRPSAM does not require the use of a mounting bracket or backing plate as long as there is a metal surface that the outlet can be screwed into. However judging by the size of the hole you've likely got, you're likely going to need to attach some sort of backing plate/mounting bracket with a 2-5/16" hole cut in it to the trailer, and then mount the inlet into that. You would need to source the...
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  • Does Better Bath Single Bowl RV Kitchen Sink Come With Mounting Hardware
    The Better Bath Single Bowl RV Kitchen Sink - 25" Long x 15" Wide - Stainless Steel # LC421572 comes with the same mounting hardware you pointed out comes with sink # LC385313. I also recommend using the Loctite RTV 5699 High-Performance Silicone Gasket Maker - Grey - 2.7-Fl Oz Tube # LT37464 to seal the sink to the underside of the counter.
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  • Replacement Gaskets For Trailer Light Lens
    The gasket behind that lens is not a manufacturer replacement part. I recommend using the Loctite RTV 5699 High-Performance Silicone Gasket Maker - Grey - 2.7-Fl Oz Tube # LT37464 to make your own gasket.
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  • Trailer Hitch and Wiring Recommendations for a 2017 Jeep Cherokee Latitude
    For your 2017 Jeep Cherokee Latitude Curt hitch # C13172 is a great option. Once installed you will only be able to see the receiver portion of the hitch. Installation of this hitch is not difficult and I am confident you can perform the installation at home. The bolt leaders do indeed come with the hitch. I have included links to the instructions and a video showing an example installation for you. Installation required 8mm, 10mm, 13mm, and 21mm sockets, a 3/4 inch socket, tape measure,...
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  • How to Install the Blue Ox Tail Light Wiring Kit on a 2017 Jeep Wrangler
    In order to install the Blue Ox Tail Light Wiring Kit part # BX8869 in the back of the taillight housing on your 2017 Jeep Wrangler you will need at least 1" of space in order for the bulb and socket kit to work. I did some research and looked at a few of the taillight assemblies for your Jeep and believe you should have absolutely no problem using this kit. 1) Starting in the engine compartment of the towed vehicle, run the 26 ft. harness through the fire wall, under the driver's side...
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  • How Does Swagman Roamer S80510 Roof Rack for Pop-Up Campers Install on Camper Top
    Yes, the Swagman Roamer # S80510 Roof Rack for Pop-Ups requires drilling since it is a permanent installation on the cap of your Jayco pop-up (as long as it does not have one of the 1-piece plastic trailer tops). The couple of holes you'll drill are easily sealed against entry of water by using a pure silicone sealant product like # 0160297 (white) or # LT37464 (gray). Full-service hardware stores usually carry a wide range of colors - and clear silicone too. This silicone is durable, flexible...
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  • Gasket Options for the Bargman Triple Tail Light
    The best recommendation I could make would be to use a gasket maker like the Loctite Silicone Gasket Maker part # LT37464. I wish we carried a gasket specifically designed to work on the Bargman Triple Tail Light # 30-84-509 that you referenced but we do not.
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  • RTV Sealant Recommendation for Oil Seal for Dexter Axles
    The Unitized Oil Seal # 10-51 would require that you apply RTV like part # LT37464 to the outer diameter of the seal before you install it per Dexter's seal installation instructions. This seal is designed as a replacement for Dexter 9K and 10K axles.
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    The Optronics RV Porch and Utility Light # RVPL7CB has a full-size metal backing plate that will protect the internal electrical components from moisture but if you like you certainly can use a thin bead of silicone rubber sealant like # LT37464 (grey), # LT37467 (black) or # 0160297 (white) around the perimeter of the base to provide additional protection. Hardware stores usually carry a range of color options including clear silicone.
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  • Gasket Availability for the Bargman Triple Tail Light # 47-84-009
    The best recommendation I could make would be to use a gasket maker like the Loctite Silicone Gasket Maker part # LT37464. I wish we carried a gasket specifically designed to work on the Bargman Triple Tail Light # 47-84-009 that you referenced but we do not. I have spoken to my contact at Bargman about this before and they told me that gaskets aren't used for these assemblies because if they are used they can trap condensation in the lens and it won't dry out. Without the gasket air...
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  • Availability of Gasket for Bargman LED Double Tail Light # 47-84-008
    Thank you for your purchase! I may have a solution for you but there is not a gasket available for the Bargman LED Double Tail Light # 47-84-008. We have spoken with Bargman in the past about this and they said that because of the design of the light gaskets are not used because they can actually trap condensation inside the lens that wouldn't have a chance to dry out. If you are concerned about moisture getting inside the assembly I recommend using a gasket maker like the Loctite...
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  • Sealing Up Around a Trailer Tail Light Using Tail Light # STL42RB On an Airstream Trailer
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    The Rear View Safety Backup Camera System with Side Cameras # RVS-062710 comes with hardware to attach the cameras to the outside of the trailer. This would require drilling into the outer body of your Airstream. If you go with this system along with the quick tow # RVS-2133, I recommend putting a dab of silicone sealant # LT37464 at the holes so no water can get in. You would also presumably have to drill holes to run the wiring. The side cameras do have gaskets so you would not have to...
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    I checked the dimensions of all of the strap hinges we offer; all can be seen on the linked page. One of these, Redline part # 2512, did not have the mounting hole spacing noted on the product page so I pulled one from stock so that I could get that information for you. The hole spacing is noted on the linked photo that I have prepared for you. None of these hinges has the exact spacing you're looking for, I'm afraid. If you do end up using an alternate part and have to drill a new hole...
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  • Bore Sealant for Trailer Oil Seals
    RTV high temperature silicone is what you are looking for. So something such as # LT37464, # LT37467, or # LT37466 would work for you. This is for oil seals that have metal on the outsides like # 91030. No sealant can get on the rubber parts. Just a little bit all the way around should be all you need.
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    You most certainly can run the wiring and connector of the Curt T-Connector # C56217 through the rubber plug in the rear of your 2015 Toyota Highlander. After cutting a slit into the plug and running the wire and connector through you will want to use some Sealant # LT37464 to re-establish the seal that the plug had. To install the connector next to your trailer hitch receiver you will want to use the Mounting Bracket 4-Pole Flat # 18144. For an easy install you can use the Short # 18140...
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Info for this part was:

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Expert Research:
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Employee Cole B
Installed by:
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Employee Matthew S
Updated by:
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