Top Gasket Sealers and Adhesives

The best Gasket Sealers includes Permatex Ultra Black RTV Silicone Gasket Maker [3 oz], Permatex Ultra Grey RTV Gasket Maker [3 oz], Permatex Ultra Red Gasket Maker [3 oz] and many others as mentioned below.

1

Permatex Ultra Black RTV Silicone Gasket Maker [3 oz]

  • Non-corrosive formula for enhanced adhesion.
  • Sensor-safe for various applications.
  • High flexibility for reliable sealing.
  • Resists powertrain fluids like engine oil.
  • Durable against aging and thermal cycling.
  • Temperature range: -65°F to 500°F.
  • Ideal for valve covers and oil pans.
  • Average Rating out of 5:
  • Price Range: $7.48
  • Color: Ultra Black
2

Permatex Ultra Grey RTV Gasket Maker [3 oz]

  • Sensor-safe and non-corrosive formula
  • High torque and vibration resistant
  • Durable silicone gasket for longevity
  • Withstands extreme temperatures from -65°F to 500°F
  • Suitable for various mechanical applications
  • Easy to use for formed-in-place gaskets
  • Resists aging, weathering, and thermal cycling
  • Average Rating out of 5:
  • Price Range: $8.13
  • Color: Ultra Gray
  • Material: Silicone
3

Permatex Ultra Red Gasket Maker [3 oz]

  • High temperature performance up to 650°F.
  • Flexible and strong adhesion for reliable sealing.
  • Sensor-safe, non-toxic, and low odor formula.
  • Non-corrosive, ensuring safe application on various surfaces.
  • Meets OEM specifications for silicone gaskets.
  • Can be used as gasket maker or dressing.
  • 3 oz tube for convenient application and storage.
  • Average Rating out of 5:
  • Price Range: $7.08
  • Material: Silicone
4

Permatex Ultra Black RTV Silicone Gasket

  • High flexibility for versatile applications.
  • Oil-resistant for enhanced durability.
  • Sensor-safe, non-corrosive formulation.
  • Compatible with powertrain fluids.
  • Eliminates need for pre-formed gaskets.
  • OEM approved for dealership warranties.
  • Easy to apply for quick repairs.
  • Average Rating out of 5:
  • Price Range: $6.48
5

Honda Hondabond HT Hi-Temp Gasket Sealant

  • High-temperature resistance for durable sealing.
  • Genuine Honda part for perfect fit.
  • Effective for oil pan gasket applications.
  • Manufactured to meet OEM specifications.
  • Easy application with silicone liquid formula.
  • Prevents leaks and maintains engine integrity.
  • Reliable performance for your Honda vehicle.
  • Average Rating out of 5:
  • Price Range: $16.01
  • Material: Silicone
6

Permatex Ultra Copper RTV Silicone Gasket Maker

  • High-temperature RTV silicone gasket maker.
  • Resistant to oil, outperforming conventional silicones.
  • Highly flexible, surpassing traditional cut gaskets.
  • Sensor-safe formula for automotive applications.
  • Low odor, non-corrosive, and easy to apply.
  • Temperature range from -75°F to 700°F.
  • Superior adhesion for reliable sealing performance.
  • Average Rating out of 5:
  • Price Range: $8.63
7

Permatex High Tack Gasket Sealant [4 oz]

  • Fast-drying all-purpose gasket sealant.
  • Dries to a non-brittle, tacky film.
  • Holds cut gaskets securely during assembly.
  • Resistant to oil, gasoline, and antifreeze.
  • Temperature range: -65°F to 500°F.
  • Ideal for various automotive applications.
  • Vehicle specific fit for optimal performance.
  • Average Rating out of 5:
  • Price Range: $9.95
  • Material: Rubber
8

Permatex RTV Silicone Gasket (0.5 oz)

  • Sensor-safe and noncorrosive RTV silicone material.
  • Formulated for water pumps and thermostat housings.
  • Universal fit for various applications.
  • Highest water-glycol resistance available.
  • Superior adhesion and flexibility for reliability.
  • Temperature range: -65°F to 500°F.
  • Can be used as gasket maker or dressing.
  • Average Rating out of 5:
  • Price Range: $4.99
9

Permatex High-Temp Red RTV Silicone Gasket

  • High-temperature resistance up to 650°F intermittent.
  • Reliable alternative to traditional cut gaskets.
  • Forms durable gaskets that resist cracking.
  • Prevents shrinking and migrating under pressure.
  • Ideal for heavy-duty automotive applications.
  • Compatible with various engine types and materials.
  • Easy to apply for quick repairs.
  • Average Rating out of 5:
  • Price Range: $7.63
  • Material: Silicone
10

Permatex Aviation Form-A-Gasket No. 3 Sealant

  • Slow-drying, non-hardening brush-top sealant.
  • Resists gasoline, oil, and grease effectively.
  • Approved for aviation and automotive applications.
  • Ideal for machined surfaces and sealing hoses.
  • Compatible with solid gaskets for effective sealing.
  • Temperature range from -65°F to 400°F.
  • Easy application with convenient brush-top design.
  • Average Rating out of 5:
  • Price Range: $8.86
11

Permatex 51813 Anaerobic Gasket Maker (50 ml)

  • Perfect for emergency gasket repairs.
  • Fills gaps up to .015 inches.
  • Cures to a durable, solvent-resistant seal.
  • Parts disassemble easily after extended use.
  • Compatible with various automotive applications.
  • Non-corrosive, OEM-specified material.
  • Quickly removes old gasket material easily.
  • Average Rating out of 5:
  • Price Range: $14.60
12

Permatex Copper Spray-A-Gasket Sealant [9 oz]

  • Fast-drying metallic copper spray adhesive/sealant.
  • Prevents gasket burnout and improves heat transfer.
  • Fills minor surface irregularities and hot spots.
  • Resists automotive fluids, especially gasoline.
  • Temperature range: -50°F to 500°F (-45°C to 260°C).
  • Ideal for cylinder head and exhaust manifold gaskets.
  • Perfect for high temperature applications.
  • Average Rating out of 5:
  • Price Range: $13.50
  • Material: Copper
13

ABRO High Temp RTV Silicone Sealant [3 oz]

  • Industrial strength for heavy-duty applications.
  • Resists oil, water, and anti-freeze damage.
  • Tough and flexible once fully cured.
  • Fast-curing formula for quick application.
  • Replaces most cut gaskets easily.
  • Suitable for high-heat automotive environments.
  • Withstands temperatures up to 500°F (260°C).
  • Average Rating out of 5:
  • Price Range: $7.49
  • Color: Clear - 1 Pack
  • Material: Silicone
14

Honda High-Temp Silicone Gasket (1.9 fl oz)

  • High-Temp formula withstands up to 600°F.
  • Ideal for areas without solid gaskets.
  • Quick-drying for fast application and use.
  • Remains flexible to absorb vibrations.
  • Resists oil, water, and most chemicals.
  • 1.9 fl oz provides ample coverage.
  • Perfect for cylinder head covers and more.
  • Average Rating out of 5:
  • Price Range: $17.30
15

1DFAUL High Temp RTV Silicone Sealant (170g)

  • High temperature resistance: -60 to +300°C.
  • Quick curing for efficient sealing applications.
  • Oil-resistant and non-corrosive for durability.
  • Flexible formula prevents shrinkage and cracking.
  • Seals gaps completely, preventing fluid leakage.
  • Ideal for engines, gearboxes, and superchargers.
  • Easy application with effective pressure for bonding.
  • Average Rating out of 5:
  • Price Range: $12.89
  • Color: Black
  • Material: Silicone
16

Super Lube Silicone Heat Sink [3 oz]

  • Excellent heat transfer efficiency for electronics.
  • Prevents hardening, drying out, or melting.
  • High heat dissipation factor to avoid overheating.
  • Extends lifespan of heat-sensitive electrical components.
  • Low bleed characteristics for stable adhesion.
  • High dielectric strength protects against electrical arcing.
  • Ideal for CPUs and mechanical heat sinks.
  • Average Rating out of 5:
  • Price Range: $9.99
  • Material: Silicone
17

Visbella High Temp RTV Silicone Sealant (3.7OZ)

  • High temperature resistance from -54°C to 343°C.
  • Waterproof and oil resistant sealant for durability.
  • Good flexibility; restores shape after stretching.
  • Easy disassembly with complete adhesive strip.
  • Excellent pressure resistance for heavy load-bearing.
  • Ideal for automotive engine parts and turbines.
  • Quick-drying formula for efficient bonding.
  • Average Rating out of 5:
  • Price Range: $8.99
  • Material: Silicone
18

BlueDevil 38386 Head Gasket Sealer (1 Quart)

  • Easy to use for quick engine repairs.
  • Permanently seals head gasket leaks effectively.
  • Repairs warped or cracked heads reliably.
  • Compatible with gasoline and diesel engines.
  • Safe for all engine types and materials.
  • No solid matter; won't clog engine systems.
  • Ideal for various vehicle applications.
  • Average Rating out of 5:
  • Price Range: $52.03
  • Color: Blue Bottle / Yellow Label
  • Material: Plastic
19

Victor Reinz RTV Silicone Sealant (70 ml)

  • Universal RTV silicone sealant for various applications.
  • Resistant to extreme temperatures from -58°F to 482°F.
  • Excellent fluid resistance including oils and detergents.
  • Fast, acid-free curing for quick application.
  • Odorless formulation, safe for oxygen sensors.
  • Durable against sunlight, ozone, and salt water.
  • Versatile sealant for automotive and household uses.
  • Average Rating out of 5:
  • Price Range: $12.40
  • Material: Silicone
20

Permatex Gasket Shellac Compound (2 oz)

  • Hard-setting, durable sealant for various applications.
  • Economical solution for gasket sealing needs.
  • Effective under extreme brake conditions.
  • Compatible with all common gasketing materials.
  • Resists diesel fuels and automotive shop fluids.
  • Temperature range: -65°F to 350°F.
  • Flash point: 24.44°F for safety compliance.
  • Average Rating out of 5:
  • Price Range: $3.33
21

Permatex MotoSeal 1 Gasket Maker (2.7 oz)

  • Ideal for disassembled engines and cycles.
  • Fully seals within 20 minutes.
  • Forms tough, flexible bond on uneven surfaces.
  • Withstands temperatures up to 350°F continuously.
  • Resists gasoline and damaging fluids effectively.
  • Convenient 2.7 oz tube for easy application.
  • Perfect for automotive and motorcycle repairs.
  • Average Rating out of 5:
  • Price Range: $9.36
22

J-B Weld High Temp RTV Silicone Sealant

  • High temperature resistance up to 550º F.
  • Trusted by professionals for reliable bonding.
  • Forms a waterproof seal on various surfaces.
  • Resists shrinkage, cracking, and weathering.
  • Ideal for automotive and mechanical applications.
  • Easy to apply and cures with moisture.
  • Perfect for DIY repairs and projects.
  • Average Rating out of 5:
  • Price Range: $14.85
  • Material: Metal,Silicone
23

Permatex Ultra Grey RTV Gasket Maker [12 Pack]

  • High-torque and high vibration application compatibility.
  • Exceptional resistance to oils and shop fluids.
  • Guaranteed leak-proof for reliable performance.
  • Low odor for comfortable working conditions.
  • Non-corrosive formula ensures safety during use.
  • Ideal for various automotive sealing applications.
  • Convenient 12-pack for multiple projects.
  • Average Rating out of 5:
  • Price Range: $68.48
  • Color: Grey
  • Material: Silicone
24

BlueDevil Pour-N-Go Head Gasket Sealer [16 oz]

  • Easy Pour-N-Go application for quick repairs.
  • Permanently seals head gasket leaks effectively.
  • Works on gasoline and diesel engines.
  • No special tools or skills required.
  • Safe for all engine types and materials.
  • Does not contain harmful solid materials.
  • Repairs leaks in various engine components.
  • Average Rating out of 5:
  • Price Range: $26.49
  • Material: Polyurethane, Acrylic
25

Permatex Form-A-Gasket #2 Sealant [1.5 oz]

  • Slow-drying, non-hardening sealant for versatile applications.
  • Approved for both aviation and automotive use.
  • Ideal for sealing cut gaskets on flexible parts.
  • Allows easy disassembly when necessary.
  • Resists gasoline, oil, and grease effectively.
  • Temperature range: -65°F to 400°F.
  • Perfect for valve cover and oil pan gaskets.
  • Average Rating out of 5:
  • Price Range: $6.32
  • Material: Plastic
26

Permatex Ultra Black RTV Gasket Maker [12 Pack]

  • Fast-curing formula for quick repairs.
  • Sensor safe and low odor formulation.
  • Non-corrosive, ensuring safe application.
  • High flexibility and oil resistance properties.
  • Temperature range: -65F to 550F intermittent.
  • Pack of 12 for multiple applications.
  • Ideal for valve covers and oil pans.
  • Average Rating out of 5:
  • Price Range: $59.26
  • Material: Silicone
27

Loctite Red Gasket Sealant (50mL)

  • High-performance red gasket sealant for durability.
  • Versatile application for various automotive components.
  • Easy-to-use paste for precise application.
  • Resistant to oil, water, and heat.
  • Ideal for sealing engine gaskets effectively.
  • Manufactured in the USA for quality assurance.
  • 50mL size for convenient storage and use.
  • Average Rating out of 5:
  • Price Range: $15.40
  • Material: Acrylic
28

Custom Accessories Gasket Material [37722] 12"x20"

  • High temperature gasket material prevents leaks effectively.
  • Measures 12" x 20" for versatile applications.
  • 1/32" thick design for durable performance.
  • Suitable for vehicles, tractors, and various machinery.
  • Customizable for specific repair needs.
  • Family-owned brand with innovative product solutions.
  • Explore a variety of aftermarket automotive accessories.
  • Average Rating out of 5:
  • Price Range: $5.99
29

Permatex RTV Sealant [81180] - Gray, 3 oz.

  • Designed for automatic transmission applications.
  • Resists harsh transmission fluid additives.
  • Flexible formula prevents hardening and cracking.
  • Improves oil resistance and adhesion properties.
  • Sensor-safe, non-corrosive, and low odor.
  • Ideal for gasket making and dressing.
  • 3 oz. tube for convenient application.
  • Average Rating out of 5:
  • Price Range: $10.72
30

LOCBONDSO Black RTV Silicone Sealant (3 oz)

  • Oil resistant and sensor safe formulation.
  • High temperature resistance up to 600°F.
  • Flexible sealant cures into durable elastomer.
  • Perfect for automotive and engine applications.
  • Convenient 3 oz tube for easy application.
  • Fast drying in 1 hour, full cure in 24.
  • Strong bond withstands various environmental conditions.
  • Average Rating out of 5:
  • Price Range: $8.49