• A red spray can of Würth Kontakt OS lubricant with a gray label showing the product name and an illustration of a precision power unit component, indicating its use for tool maintenance.
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Würth Contact Spray OS

Würth Contact Spray OS

Long-term corrosion inhibitor spray engineered for oxidation protection and precision lubrication of electrical contacts and engine components.

089361

Low stock

⚙ Ideal For

  • New contact protection
  • Switch corrosion prevention
  • Engine component lubrication
  • Precision part protection
  • Long-term preservation

✔ Benefits

  • Corrosion inhibition
  • Oxidation protection
  • Precision lubrication
  • Acid-free formula
  • Lasting protection layer
DETAILED DESCRIPTION →
£14.99 GBP
£14.99 GBP
£12.49 Ex. VAT
Sale Sold out
Taxes included. Shipping Policy

🚚 UK Shipping: Standard (£2.99) or FREE on orders over £75.

📦 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 9:00–17:00. 

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

Free Shipping

We offer free Standard (2-3 Days) shipping on orders within the United Kingdom on orders over £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 - £2.99

Express (UK Only) - 1-2 Days - £4.99

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

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


Large Parcel

Standard (UK Only) - 2-3 Days - £2.99

Express (UK Only) - 1-2 Days - £4.99

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

International (ROW) - 5-10+ Days - £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. 

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: https://esupplyline.com/policies/refund-policy.

Further Information

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

Phone: 01953 711 881

Email: sales@esupplyline.com

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

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

View full details

Würth Contact Spray OS

Würth Contact Spray OS is a specialist corrosion inhibitor and lubricant spray engineered for long-term protection of new electrical contacts, switches, and precision engine components. The aliphatic hydrocarbon formulation leaves a protective layer that resists oxidation whilst providing effective lubrication for moving parts.

Key Features

  • Long-Term Corrosion Protection — The protective layer that forms after solvent evaporation provides durable oxidation resistance, keeping new contacts and switches protected from corrosion throughout service life.
  • Oxidation Inhibitor Action — Specifically engineered to prevent oxidation that degrades electrical conductivity and mechanical performance on precision components.
  • Highly Effective Lubricant — Beyond corrosion protection, the spray provides effective lubrication for precision engine parts and electromechanical components, reducing friction and wear.
  • Removes Contamination — The cleaning action removes dirt, resin deposits, oil residues, and metal abrasion particles that interfere with contact performance or component function.
  • Acid-Free Formulation — The absence of acidic components prevents corrosive interaction with electrical contacts and precision materials, ensuring long-term material compatibility.
  • Does Not Resinify — Unlike some protective sprays that leave sticky residues, Contact OS evaporates cleanly without leaving gummy deposits that would interfere with moving parts or electrical contact.
  • Precision Engine Component Compatible — Engineered specifically for jet engine and precision machinery applications where material compatibility and cleanliness are critical.
  • Lasting Protection Layer — After solvent evaporation, a thin protective layer remains that provides ongoing oxidation resistance without reapplication.
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Description

Prevention Through Protection as Maintenance Philosophy

Electrical and mechanical failures often trace to corrosion that develops gradually over time. Reactive maintenance addresses failures after they occur; preventive maintenance applies protective coatings that prevent corrosion before it starts. Würth Contact Spray OS enables preventive maintenance by applying long-term protection to new components before corrosion exposure.

Corrosion Inhibitor Chemistry for Electrical Reliability

Electrical contacts are vulnerable to oxidation that increases resistance and degrades conductivity. Modern vehicles and equipment depend on reliable electrical function — a single corroded contact can cascade into system failures. Contact Spray OS prevents this by creating a protective barrier that blocks oxidation pathways.

Dual-Function Formulation as Efficiency Feature

The spray serves two purposes — it cleans contamination from new components whilst applying protective coating. This dual function eliminates the need for separate cleaning and protection products, simplifying maintenance procedures.

Precision Lubrication for Moving Components

Many electrical switches and electromechanical components include moving parts that require lubrication. Contact Spray OS provides this lubrication whilst also protecting against corrosion, addressing multiple maintenance needs simultaneously.

Acid-Free Chemistry as Corrosion Prevention

Some solvents and protective oils contain acidic components that actually accelerate corrosion. Würth's acid-free formulation prevents this risk, ensuring the protection layer doesn't create the corrosion it's meant to prevent.

No Resinification as Performance Guarantee

Protective oils sometimes oxidise and resinify (form sticky deposits) over time. Contact Spray OS explicitly resists this, remaining fluid and non-gummy throughout service life, particularly important for precision components where viscous residues would interfere with function.

More Information

Application Instructions

  1. De-energise all electrical components — Ensure all power is disconnected. Do not work on energised circuits.
  2. Prepare the work area — Ensure adequate ventilation for solvent fumes. Avoid open flames or ignition sources.
  3. Check plastic compatibility — Before application, verify that Contact OS is compatible with any plastic components present. Test on inconspicuous areas if uncertain.
  4. Shake the aerosol can well — Mix thoroughly to ensure uniform formulation before use.
  5. Use spray tube attachment — Attach the provided spray tube to the aerosol can for precise, controlled application.
  6. Apply lightly to contacts — Using the spray tube, apply a light coating to new electrical contacts, switches, or precision engine components. Light application is preferable to heavy coating.
  7. Cover surrounding areas — Ensure overspray doesn't contact components that shouldn't receive the spray.
  8. Allow solvent to evaporate completely — Let the spray dry thoroughly (typically 10–15 minutes). The protective layer forms as the solvent evaporates.
  9. Verify complete dryness — Ensure no visible moisture or wet residue remains before energising electrical systems.
  10. Allow full curing — The protective layer continues to develop over the first few hours. Avoid disturbing treated components during this period.
  11. Reconnect power when dry — Once completely dry, reconnect electrical power and verify normal function.

Specifications

Product Type Corrosion inhibitor and lubricant spray

Format Aerosol spray can with spray tube attachment

Volume 200 mL

Chemical Basis Aliphatic hydrocarbon solvent

Colour Transparent liquid

Smell Characteristic solvent odour

Density 0.767 g/cm³ (at 20°C)

Evaporation Rate Moderate — typically 10–15 minutes to complete dryness

Application Method Spray tube attachment for precise, controlled application

Primary Application Long-term corrosion protection, precision lubrication, contamination removal

Protection Mechanism Thin protective layer forms after solvent evaporation

Corrosion Inhibition Prevents oxidation of electrical contacts and precision components

Lubrication Function Effective lubricant for moving precision components

Contamination Removal Removes dirt, resin deposits, oil residues, metal abrasion

Protective Layer Characteristics Acid-free, non-resinifying, lasting protection

Oxidation Resistance Long-term protection against corrosion and oxidation

Material Compatibility Test plastic compatibility before application

Electrical System Safety Must be completely dry before power restoration

Flammability Highly flammable — protect from flames and ignition sources

Pressure Aerosol pressurised can — protect from heat above 50°C

Temperature Resistance Keep away from sunlight and temperatures exceeding 50°C

Application Philosophy Preventive maintenance through protective coating application

Precision Component Compatibility Engineered for jet engine and high-precision machinery use

Non-Resinifying Guarantee Will not form sticky deposits or viscous residues

Acid-Free Formulation No acidic components that would accelerate corrosion

AOX-Free Yes — no halogenated organic compounds

Shelf Life 24 months from production

Storage Conditions Cool location, protected from sunlight and heat

Environmental Aliphatic hydrocarbon-based formulation

HS Code 2710.19

Documents

FAQs

What's the difference between Contact Spray SW (cleaning) and Contact Spray OS (protection)?

Contact Spray SW is a cleaner engineered to remove existing contamination and restore functionality to corroded or dirty contacts. Contact Spray OS is a protectant that applies long-term corrosion protection to new or clean contacts. Use SW first to clean, then OS to protect.

How long does the protective layer last?

The protective layer provides long-term protection against corrosion throughout normal service life. Environmental exposure and mechanical wear may gradually reduce the protection over extended periods, but the initial protection is substantial and long-lasting.

Is Contact Spray OS safe on all plastics?

The formulation is generally safe on common electrical plastics, but the notice specifically recommends testing on plastic components before general application. Some specialty plastics may be incompatible — always test first.

Can I use Contact Spray OS on actively moving mechanical components?

Yes, the spray provides effective lubrication for precision moving parts. The protective layer won't gum up or resinify, maintaining its lubricating properties throughout service life.

Product Product subtotal Quantity Price Product subtotal
Würth Contact Spray OS089361
Würth Contact Spray OS089361
£14.99/ea 		£0.00
£14.99/ea £0.00