Arexons Liquid gaskets

Arexons Liquid Gaskets and Silicone Sealants

Arexons sealants (Motorsil Line) are the workshop's go-to for creating highly reliable, on-site seals. They replace or improve traditional preformed cork, paper, and rubber seals.

Why use Arexons Liquid Gasket?

Perfect Seal: Fills micro-imperfections in ground and unground metal surfaces.
Extreme Resistance: Specific formulas to resist hot oils, coolants and temperatures up to 300°C.
Elasticity: Absorbs engine vibrations, preventing breakages or leaks over time.

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There are 12 products.

-30%

Arexons black silicone gasket 200 ml cod. 0099

Available

Automatic Dispenser (Pressure Pack): Special pressurized pack that allows you to dispense silicone with millimetric precision without using guns or effort.
Replaces Gaskets: Perfect for replacing or reinforcing cork, felt, paper and rubber gaskets on any engine.
Extremely High Resistance: Resists mineral and synthetic oils, transmission fluids, water, coolant and strong vibrations.
Operating Temperature: Elastic and stable from -40°C up to +260°C (and up to 300°C for short periods).
Multi-purpose: Ideal for oil pans, valve covers, water pumps, differentials, gearboxes and gear boxes.

The professional "ready-to-use" solution for sealing your engine with a simple touch of your fingers.

€30.90

€44.14

-30%

Arexons motorblack black silicone gasket 60 gr code 0094

Available

The Classic Tube: The format most loved by mechanics for its practicality and convenience. Ideal for small jobs and quick repairs.
Universal Gasket: Replaces or complements any pre-formed cork, paper, felt and rubber gasket.
Extreme Resistance: Once hardened, it resists mineral and synthetic oils, gasoline (vapours only, not immersion), water and coolant.
Thermal Range: Resists temperatures from -40°C to +240°C, with peaks up to +300°C. Perfect for hot engine parts.
Does not drip: The thixotropic consistency allows it to be applied even vertically without it dripping before assembly.

The indispensable "Black Paste" that solves every sealing problem in your garage.

€13.70

€19.57

-30%

Arexons motorsild original red silicone gasket 60 gr cod. 0096

Available

The Original "Red Paste": The most famous and widely used silicone sealant in mechanics, synonymous with absolute reliability.
High Temperature (+300°C): Formulated to withstand extreme heat spikes where normal silicones fail (headers, exhausts, thermostats).
Universal Gasket: Replaces any pre-formed gasket. Conforms to irregular surfaces, ensuring a watertight seal.
Multipurpose (Car & Home): Perfect for engines (sumps, differentials) but also for industrial systems, boilers, stoves and domestic oven doors.
Chemical Resistance: Resistant to water, coolant, hot oils and atmospheric agents.

The myth of liquid gaskets: when the going gets hot, professionals choose Motorsil D.

€14.16

€20.22

-30%

Arexons oximix pro black silicone gasket 100 ml cod. 0078

Available

Neutral Technology (Oxime): Oxyme-crosslinked silicone, free of acetic odor. Non-corrosive and safe for delicate engine parts.
SENSOR SAFE (Safe for electronics): Special formula that does not damage lambda probes, catalytic converters and electronic sensors. Essential for Euro 4/5/6 cars.
Superior Chemical Resistance: Designed to resist the latest synthetic oils and extended-life coolants.
Pressure Pack 100ml: Automatic pressure dispenser for easy, precise and waste-free application, even in awkward positions.
High Performance: Resists temperatures from -55°C to +250°C and fills large gaps thanks to its thixotropy.

The professional's choice for sealing modern engines without risk to electronics.

€19.70

€28.15

-30%

Arexons pik liquid seal 65 ml cod. 0012

Available

Total Gasoline Resistance: Unlike silicones, it is formulated to withstand immersion in gasoline, diesel and agricultural fuels.
Ideal for Carburetors: The ultimate product for sealing carburetor float bowls, fuel pumps and fuel system fittings.
Strengthens Solid Gaskets: Perfect for spreading on paper, cork and felt gaskets to impregnate them and improve their seal over time.
Semi-Drying: Forms an elastic and tenacious film that never hardens completely, absorbing vibrations without cracking.
For Ground Surfaces: Creates a minimal thickness, ideal for precision mechanical couplings (motorcycle crankcases, gearboxes) where tolerances are tight.

The indispensable historical sealant where silicone can't reach.

€9.44

€13.49

-30%

Arexons black silicone gasket seal 5552 ml 70 cod. 0075

Available

Dual Action (Adhesive + Sealant): Not only does it act as a seal, but it also has strong adhesive power. Ideal for bonding moldings, profiles, and parts subject to vibration.
Specific for Bodywork & Nautical: Formulated to resist atmospheric agents, water (fresh and salt), frost and above all UV rays (does not fade or crack in the sun).
Neutral and Odorless: Low-modulus Alkoxy technology. It doesn't smell or corrode metals or paint, making it safe even on delicate surfaces.
Multi-material: Adheres perfectly to glass, ceramic, steel, aluminum, rigid plastics (ABS, PVC), wood and polycarbonate.
Permanent Elasticity: Maintains its flexibility over time, absorbing thermal expansion and structural movements without detaching.

The black "Do-It-All" for repairing, gluing and sealing the exterior and interior of your vehicle.

€19.31

€27.59

-30%

Arexons seal 5661 white silicone gasket 60 ml cod. 0076

Available

Arexons seal 5661 white silicone gasket 60 ml cod. 0076
Silicone gasket to be used in replacement or as an adjuvant of any type of preformed sealing gasket for mechanical, thermomechanical, chemical, electronic, electromechanical couplings that operate in particularly difficult conditions. Single-component acetic-type elastomer. Vulcanize at room temperature. Thixotropic, does not drip. Excellent resistance to oils and high temperatures. High mechanical properties: hardness, resistance to breakage and compression, etc. Excellent resistance to climatic aging. High degree of vibration absorption. Operating temperature: from -70°C to +250°C with peaks up to +300°C. Does not damage catalytic converter sensors.

€12.92

€18.46

-30%

Arexons green sealant 100 ml code 0090

Available

Anaerobic Sealant: Hardens only in the absence of air (once the piece is closed) and in contact with the metal. Does not dry in the open air.
Zero Thickness: Creates an extremely thin and tenacious film that does not alter mating dimensions and tolerances. Ideal for sealing engine casings (e.g., Vespas, 2-stroke motorcycles) and gearboxes.
High Resistance: Resists oils, gasoline, coolants, gases, and high pressures. Does not crumble with vibration.
Replaces Solid Gaskets: Perfect for replacing thin paper gaskets on machined or ground surfaces.
Easy Disassembly: Allows the casings to be reopened with normal tools during subsequent maintenance.

The technical choice for sealing precision couplings where silicone should not enter.

€24.23

€34.62

-30%

Arexons sealant putty 100 ml jar cod. 0017

Available

Jar Format with Brush: The quickest and most convenient application for large surfaces. The brush integrated into the lid allows you to apply the product evenly without getting your hands dirty.
Assembly Adhesive: Its high viscosity (tackiness) is ideal for holding gaskets in place when assembling difficult or upside-down parts.
Strengthens Solid Gaskets: Penetrates the fibers of paper, cardboard, felt and cork gaskets, making them impermeable to oil, gasoline and water.
Semi-Drying: Never fully hardens, remaining plastic/elastic. This absorbs vibrations and facilitates future disassembly of parts.
Total Resistance: Resists the aggressive action of gasoline, mineral and synthetic oils, greases, water, and antifreeze. Operating temperature range from -20°C to +110°C.

The expert mechanics' secret to installing and sealing gaskets in one go.

€9.32

€13.32

-30%

Arexons mastic for seals 200 ml jar cod. 0019

Available

Maxi 200 ml format: The professional size for workshops, adjustments, and maintenance of agricultural or industrial vehicles. Double the capacity for large jobs.
Integrated Brush: The cap with brush allows you to quickly spread the product on large gaskets (e.g. truck oil pans, tractor crankcases).
Sealant and Impregnator: Ideal for cork, paper and felt gaskets: it holds them in place during assembly and makes them impermeable to fluids.
Non-Hardening: Maintains a plastic consistency that will not crack under the severe vibrations of heavy diesel engines and facilitates future disassembly.
Total Resistance: Formulated to resist gasoline, diesel, used engine oil, grease, water, and antifreeze. Temp: -20°C to +110°C.

The essential supply for the professional who can't afford to run out of putty halfway through a job.

€13.79

€19.70

-30%

Arexons Oximic Pro Gray 200 ml cod. 0077

Available

"Aluminum" Gray Color: Designed to blend seamlessly with light alloy crankcases, covers, and flanges. Aesthetic finish equal to the original (OEM) finish.
Neutral Technology (Oxime): Does not smell like vinegar and does not corrode aluminum or delicate alloys. Ideal for precision mechanics.
Specific for Asian Motorcycles & Cars: Meets the specifications of Japanese manufacturers (Honda, Yamaha, Toyota, Nissan) who use high-performance grey sealants.
SENSOR SAFE: Safe for lambda probes, control units, and electronic sensors. Does not interfere with engine electronics.
Pressure Pack 200 ml: Professional size with automatic dispenser. Allows you to apply perfect lines effortlessly and without a spray gun.

The choice of motorcycle mechanics and specialists for invisible and secure sealing on light alloys.

€24.44

€34.92

-30%

Arexons System RS01 Self-levelling 310 ml cod. 4252

Available

Self-Leveling Formula (Fluid): Its liquid/viscous consistency allows the product to spread by gravity, filling cracks and creating a perfectly flat surface without the need for a spatula.
MS Polymer Technology: The pinnacle of sealant technology. It combines the advantages of polyurethanes and silicones: extremely strong adhesion, permanent elasticity, and exceptional durability.
Paintable: Unlike silicone, it can be painted with any paint (water or solvent-based) once dry.
Wet Adhesion: Adheres tenaciously even on wet surfaces or in conditions of high humidity (even underwater in an emergency).
Horizontal Applications: Specific for sealing expansion joints on floors, cracks in concrete, terrace joints and for potting components.

The smart sealant that works for you: it levels itself for a flat, professional finish.

€53.67

€76.68

Choosing Guide: Red, Black, or Gray Pasta?

The Arexons range (System and Motorsil) offers several formulations. Choosing the right one is essential for a successful job:

MOTORSIL D (Red Paste): The timeless classic. Ideal for mechanical connections subjected to high temperatures (exhaust manifolds, thermostats). It has excellent thermal resistance but is more visible aesthetically.
BLACK GASKET (Motorsil Nero/System): Designed for more modern engines. Offers exceptional resistance to synthetic oils and strong vibrations. Ideal for oil pans and differentials. Less visible once applied.
GREY GASKET: Often specific to Japanese cars or motorcycles, or where an aesthetic finish is required that blends in with the aluminum of the engine block.

🔧 How to apply liquid gasket correctly

To avoid future losses, follow these 3 fundamental steps:

Cleaning: Remove all traces of the old gasket and thoroughly degrease both surfaces with a solvent (e.g., Fulcron or Thinner). They must be dry and free of oil.
Application: Spread a continuous bead of about 3-4 mm on one of the two surfaces only, surrounding the bolt holes well.
Wait: Assemble the parts without over-tightening them immediately. Wait about 15-20 minutes for a surface "skin" to form, then tighten to the specified torque. IMPORTANT: Do not start the engine for at least 4-6 hours (preferably 24 hours) to allow complete vulcanization.

Frequently Asked Questions (FAQ)

1. Can I use Motorsil instead of a head gasket?
Absolutely not. The head gasket requires specific materials (multilayer metal) to withstand the compression of the cylinders. Liquid gaskets are used for valve covers, oil pans, water pumps, and crankcases.

2. Is red paste resistant to gasoline?
Acetic silicones (like most red pastes) are resistant to oils and glycols, but they are not recommended for direct and continuous contact with gasoline (e.g., carburetors, tanks) as they tend to dissolve. Special non-silicone sealants are required for gasoline.

3. How long does an opened tube last?
If tightly closed with its own cap, the product will keep for several months. If the spout has hardened, it's often enough to unscrew it and remove the dry silicone "plug" that has formed inside, protecting the rest of the product.

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Arexons Liquid Gaskets and Silicone Sealants

Why use Arexons Liquid Gasket?

Choosing Guide: Red, Black, or Gray Pasta?

🔧 How to apply liquid gasket correctly

Frequently Asked Questions (FAQ)

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