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  1. Lubricants Sealants Adhesives
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Loctite RTV 5920 High-Performance Silicone Gasket Maker - Copper - 2.7-Fl Oz Tube

Loctite RTV 5920 High-Performance Silicone Gasket Maker - Copper - 2.7-Fl Oz Tube

Item # LT37466
Our Price: $8.24
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Designed for higher-temperature applications than other silicone gasket makers, this copper silicone gasket maker forms a high-quality gasket that seals the space between matched parts. Prevents leakage of air, oil, antifreeze and transmission fluid. Fastest Shipping and Guaranteed Lowest Prices for Loctite RTV 5920 High-Performance Silicone Gasket Maker - Copper - 2.7-Fl Oz Tube. Read our customer reviews of Loctite lubricants sealants adhesives. Call 1-833-496-1390 for expert service or order your lubricants sealants adhesives part number LT37466 by Loctite online at
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Loctite Lubricants Sealants Adhesives - LT37466

  • Sealant
  • Gasket Maker
  • 2.7 oz
  • Loctite

Designed for higher-temperature applications than other silicone gasket makers, this copper silicone gasket maker forms a high-quality gasket that seals the space between matched parts. Prevents leakage of 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, high-temperature applications
  • Safe for sensors
  • 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): 60 minutes
  • Full cure (time required to reach full set): 24 hours
  • Temperature range (endurance limits of the gasket maker): -65 F to 600 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, timing covers, water pumps and thermostat housings. Specially designed for high-temperature-producing 4-cylinder, turbocharged and high-performance engines.

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.

491984 Loctite RTV 5920 - Copper High Performance Silicone Gasket Maker

Alternate part number: 37466

Installation Details LT37466 Installation instructions

California residents: click here


See what our Experts say about this Loctite Lubricants Sealants Adhesives

  • Is Loctite RTV 5920 Copper Silicone Gasket Maker # LT37466 Suitable for Use on a Turbo
    I checked with my technical contact at Loctite about your application for their RTV 5920 Copper Silicone Gasket Maker, part # LT37466, between header and turbo on your 1996 Impala six speed. My contact advised that so long as this silicone/copper gasket maker is used within its specified temperature and gap size limits it should be fine for use as you intend. This product is suitable to seal both gases and fluids and works best when filling gaps between mating surfaces that measure between...
    view full answer...
  • 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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  • Damper Operation & Installation of Ventline Exterior Wall Vent for RV Range Hoods V2111-55
    Yes, the internal damper in the Ventline Exterior Wall Vents for RV Range Hoods, parts # V2111-55 in black and # V2111-13 in white, opens automatically when you turn on the exhaust fan in your RV's kitchen range hood. These vents also have a locking feature for the damper that lets you keep it secured in the closed position. Two swiveling latches, one on each end of the damper panel, allow you to secure the damper for off-season storage or when in extreme temperatures when you will want...
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  • Does Ventline Exterior Wall Vent for RV Range Hoods V2111-55 Include Insect Screen
    The Ventline Exterior Wall Vent for RV Range Hoods # V2111-55 does not include a screen to block insects but it does have a lockable damper panel that lets you secure the damper when the range hood fan is not in use, such as during storage periods. This feature helps stop drafts that can cause your HVAC system to turn on unnecessarily. We also have this item in black as part # V2111-55. Installation requires hardware such as # 31071 (ten screws are needed) as well as a silicone rubber...
    view full answer...
  • Does Ventline Exterior Wall Vent for RV Range Hood V2111-13 Have a Locking Damper
    The Ventline Exterior Wall Vent for RV Range Hood, part # V2111-13 in white and part # V2111-55 in black, do have pivoting latches that lets you lock the damper closed when not in use. This is a great feature for storage periods and prevents critters from entering the RV. Installation requires either re-using your RV's existing vent hardware or supplying new screws such as # 31071. You will also need a sealant to complete the install. We offer pure silicone sealant that remains flexible...
    view full answer...
  • Is Rivet Gun Required to Install Rhino-Rack RT-Style Roof Rack Tracks RRRTS01
    Yes, a rivet gun is required to install the Rhino-Rack RT-Style Roof Rack Tracks # RRRTS01 to your vehicle with a naked roof such as your 2009 Legacy, or to a camper shell or hard tonneau cover. The kit includes the stainless steel pop rivets. We recommend using a silicone sealant after track installation to provide protection against entry of water and dirt. You can use clear or tinted 100% silicone caulk available at hardware stores or the Loctite gasket maker we offer: part # LT37467...
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  • Roof Vent with 110V-AC Powered Fan for 6 x 12-Foot Diamond Cargo Trailer
    Most square trailer roof vents are a common size, 14 x 14, and they require a roof opening of 14-1/4 x 14-1/4-inches. If your vent measures this approximate size then you can safely presume you have one of these standard-size roof vents. We do offer a 110V-AC powered fan in this size that is shown on the linked page, part # V2128SP-01 from Ventline. This vent features a manual-lift lid, on/off switch, insect screen and it also includes an internal trim piece (the garnish) for a clean installed...
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  • Replacement Black/Gray Water Valve and Fittings for a 1998 Newmar Dutch Star
    It looks like only one of your photos came through but I think I will be able to get you the parts and advice you need based on this. For starters, the Double RV Waste Valves part # T81 will be correct for the black and gray water waste valves. In order to connect the 3" waste valve to your black water tank it looks like you just have two 90 degree street elbows tied together. To replace these, we have Valterra Street DWV Fitting for RV Sewer System part # D50-2882 which can then be joined...
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Info for this part was:

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