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3M Scotch 1605 Dehumidifier Spray

3M Scotch 1605 Dehumidifier Spray

Moisture-displacing aerosol spray forming protective film on electrical, electronic, and mechanical components across extreme temperature ranges.

1605

Low stock

āš™ Ideal For

  • Electrical and electronic equipment
  • Switches, relays, and motor components
  • Battery terminals and connectors
  • Ignition systems and tools
  • Instruments and precision equipment

āœ” Benefits

  • Penetrates and displaces moisture
  • Forms protective moisture barrier film
  • Extreme temperature stability (-74Ā°C to 175Ā°C)
  • Neutral to paints, plastics, rubber, fabrics
  • Prevents moisture re-ingress
DETAILED DESCRIPTION ā†’
Ā£16.99 GBP
Ā£16.99 GBP
Ā£14.16 Ex. VAT
Sale Sold out
Taxes included. Shipping Policy

šŸ“¦ Dispatched same-day if ordered before 3pm!

Shipping Information

What Are My Shipping Options?

In-Store Pickup

In-Store pickup is available on all purchase. Pickups are available Monday - Friday between the hours of 9:00ā€“17:00.Ā 

An email confirmation will be sent when your order is ready for collection.Ā 

Free Shipping

We offer free Standard (2-3 Days) shipping on orders within the United Kingdom on orders over Ā£100. Please note, some large items that require specialist courier companies, such as large mirrors and palleted items are excluded from this deal.

Shipping Fees

We also offer shipping at the following rates:

Standard-Size Parcel

Standard (UK Only) - 2-3 Days - Ā£2.99

Express (UK Only) - 1-2 Days - Ā£4.99

International (EU) - 3-7 Days - Ā£14.99

International (ROW) - 5-10+ Days -Ā£23.99


Large Parcel

Standard (UK Only) - 2-3 Days - Ā£2.99

Express (UK Only) - 1-2 Days - Ā£4.99

International (EU) - 3-7 Days - Ā£14.99

International (ROW) - 5-10+ Days - Ā£69.99

Most UK orders will be sent using Royal Mail, with larger items being sent with DPD.

International orders within the EU will normally be dispatched with Royal Mail, DPD, or UPS.

International orders to the rest of the world will normally be sent with DPD or UPS.

Please note, international delivery charges are very volatile and subject to change. We will do everything in our power to honour the delivery fee, however, in some cases, shipping may increase in price. In this event, you will be given the offer to pay the difference or cancel the order and receive a full refund.

Please note, we may be subject to various rules and restrictions in relation to some international deliveries, and you may be subject to additional taxes and duties over which we have no control. If such cases apply, you are responsible for complying with the laws applicable to the country where you live and will be responsible for any such additional costs or taxes.

Dispatch Times

Orders placed before 15:00 Monday - Friday will be shipped on the same day.Ā 

Orders placed after this time will be shipped on the following business day,

Please note, we are closed at weekends, as well as English Bank Holidays.

Returns Policy

Our refund policy can be found at the following address:Ā https://esupplyline.com/policies/refund-policy.

Further Information

You can contact us for further information on our shipping policies using the following:

Phone:Ā 01953 711 881

Email:Ā sales@esupplyline.com

Live Chat:Ā Available on our website, Monday - Friday, 8:30 - 17:00.

Contact Form:Ā https://esupplyline.com/pages/contact

View full details

3M Scotch 1605 Dehumidifier Spray

3M Scotch 1605 Dehumidifier Spray is a moisture-displacement aerosol penetrating and removing moisture from electrical, electronic, and mechanical equipment whilst forming a protective film against renewed moisture ingress. The formulation remains stable across extreme temperatures and is neutral to all common automotive and industrial materials.

Key Features

  • Penetrates and Displaces Moisture ā€” Advanced formulation penetrates into crevices, connectors, and component cavities, actively displacing water molecules.
  • Protective Film Formation ā€” After moisture displacement, forms a thin protective barrier that prevents renewed moisture ingress and corrosion.
  • Extreme Temperature Stability ā€” Maintains protective properties across the range -74Ā°C to 175Ā°C, suitable for outdoor, engine compartment, and extreme-use applications.
  • Material Neutral Chemistry ā€” Completely neutral to paints, plastics, rubber, and fabrics - safe on diverse equipment without compatibility concerns.
  • Defrost Capability ā€” Eliminates frozen sections on equipment, restoring function in cold conditions through moisture displacement and thermal properties.
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Description

Moisture Ingress on Electrical and Electronic Equipment

Electrical connections, switches, relays, motors, batteries, and instruments are vulnerable to moisture ingress through condensation, water spray, humidity, and operational exposure. Trapped moisture causes corrosion, electrical shorts, contact resistance, and equipment failure. Scotch 1605 addresses this critical challenge through moisture displacement and long-term protection.

Dual-Action Moisture Control

Traditional moisture removers either displace existing moisture or provide barrier protectionā€”Scotch 1605 accomplishes both. The penetrating spray eliminates current moisture, then the residual film prevents new moisture ingress. This dual action provides immediate restoration and long-term protection against moisture-related failures.

Extreme Temperature Range Utility

Automotive and industrial equipment operates across extreme temperaturesā€”engine compartments reach 175Ā°C, whilst outdoor winter conditions reach -74Ā°C. Most protective products degrade or fail at these extremes. Scotch 1605's formulation maintains stability across the full range, ensuring consistent protection in any operating environment.

Electrical Safety and Functionality Restoration

Moisture corrodes electrical contacts, increasing resistance and reducing reliability. Scotch 1605's moisture displacement immediately restores electrical conductivity and connection reliability, whilst the protective film prevents corrosion reformation. This is particularly critical for ignition systems, battery terminals, and sensor connections.

Material Compatibility Without Surface Damage

Harsh dehumidifiers can damage or discolour painted surfaces, plastic covers, rubber gaskets, and fabric insulation. Scotch 1605's neutral formulation protects underlying materials whilst providing moisture protection, eliminating the need for masking or selective application concerns.

Defrosting Capability for Cold Climate Service

In freezing conditions, moisture-laden equipment can ice up, preventing operation. Scotch 1605's moisture displacement and thermal properties actively defrost frozen connections and mechanisms, restoring immediate functionality whilst preventing re-freezing through moisture elimination.

More Information

Application Instructions

Identify moisture-affected equipment. Locate electrical, electronic, or mechanical components showing signs of moisture exposure, corrosion, or functional degradation.

Ensure adequate ventilation. Work in well-ventilated areas or outdoors; the aerosol generates vapours requiring air circulation for worker safety.

Shake the canister thoroughly. Mix the dehumidifier by shaking for 10ā€“15 seconds to ensure uniform propellant and active ingredient distribution.

Apply a light, even mist. Using the aerosol, spray a light mist directly onto affected connectors, switches, relay terminals, motor components, and other targeted areas from approximately 15ā€“20 cm distance.

Penetrate crevices and cavities. Direct the spray into connector contacts, relay cavities, switch mechanisms, and other enclosed spaces where moisture accumulates.

For frozen equipment, apply directly to affected area. Aim the spray at frozen connectors or mechanisms to displace ice and restore functionality.

Allow penetration time. Let the spray penetrate and displace moisture for 30ā€“60 seconds without immediate wiping.

Dry with compressed air if needed. For heavy moisture, light compressed air can accelerate moisture removal, but natural evaporation is usually sufficient.

Allow protective film to form. Once visible moisture is displaced, allow the residual film to cure for 5ā€“10 minutes before energising or operating equipment.

Test equipment functionality. Confirm restored electrical conductivity and mechanical operation before returning equipment to service.

Reapply as needed. For critical or repeatedly exposed equipment, reapply protective coating periodically (typically monthly or quarterly) to maintain moisture protection.

Specifications

Product Type Moisture-displacing dehumidifier spray

Format Aerosol spray canister

Container Size 400 mL

Temperature Range -74Ā°C to 175Ā°C operating stability

Primary Function Moisture penetration and displacement

Secondary Function Protective barrier film formation

Application Method Aerosol spray from 15ā€“20 cm distance

Penetration Capability Reaches connectors, cavities, and enclosed spaces

Material Compatibility Neutral to paints, plastics, rubber, fabrics

Defrost Capability Yesā€”eliminates frozen sections and restores functionality

Film Formation Thin protective barrier after moisture displacement

Re-Ingress Prevention Protects against renewed moisture ingress through barrier film

Evaporation Time 5ā€“10 minutes for film cure; can operate equipment after this time

Equipment Applications Electrical switches, relays, motors, batteries, ignition systems, connectors, instruments, tools

Environmental Exposure Outdoor equipment, engine compartment components, marine electrical systems

Storage Store in cool conditions away from heat and direct sunlight

Shelf Life Standard aerosol stability with proper storage

HS Code 3402.20

Documents

FAQs

How does Scotch 1605 differ from standard WD-40 or penetrating oils?

Scotch 1605 is specifically formulated for moisture displacement and protection, actively removing water and forming a barrier against moisture re-ingress. Standard penetrating oils provide lubrication and corrosion prevention but are not optimised for moisture removal and don't form protective films like Scotch 1605.

Is Scotch 1605 safe to spray on active electrical equipment, or must I disconnect power first?

Always disconnect power before application to electrical or electronic equipment. The aerosol is safe once equipment is de-energised and the protective film has cured (5ā€“10 minutes). Never spray on live circuits or energised equipment.

How often should I apply Scotch 1605 to critical electrical connections?

Frequency depends on environmental exposure and humidity. In harsh marine or highly humid environments, monthly or quarterly reapplication maintains optimal protection. For occasional use or dry environments, annual or semi-annual application is typically sufficient.

Can Scotch 1605 repair corroded electrical contacts, or does it only prevent future corrosion?

Scotch 1605 displaces moisture that causes corrosion and prevents future corrosion through the protective film. Existing heavy corrosion may require mechanical cleaning or contact replacement. The spray is most effective at preventing corrosion and restoring function when applied to early-stage moisture damage.

Product Product subtotal Quantity Price Product subtotal
3M Scotch 1605 Dehumidifier Spray1605
3M Scotch 1605 Dehumidifier Spray1605
Ā£16.99/ea 		Ā£0.00
Ā£16.99/ea Ā£0.00