Aluminium Sealing Washers – Metric Sizes M6 to M30 | Flat DIN Washers | Lightweight, High Strength Seal Washers

🪛 High-Performance Aluminium Sealing Washers – Metric Sizes M6 to M30

These premium-grade aluminium sealing washers are engineered for strength, reliability, and versatility. Ideal for aerospace, electrical, automotive, agricultural, and general industrial applications, these washers provide exceptional performance under pressure — while being incredibly lightweight.

Whether you're replacing drain plug washers, sealing hydraulic lines, or working on sensitive electrical assemblies, these flat aluminium washers offer the perfect combination of durability and low weight.

📏 Available Sizes:

All measurements are Inner Diameter (I/D) × Outer Diameter (O/D) × Thickness.

Some popular examples:

• M6: 6mm x 10mm x 1mm
• M8: 8mm x 12mm / 13mm / 14mm x 1mm
• M10: 10mm x 13mm / 14mm / 16mm x 1mm
• M12: 12mm x 15.5mm / 16mm / 18mm / 20mm (1.5mm & 2mm thickness)
• M14 – M30: Various precise fits in 1.5mm, 2mm, and 2.5mm thickness

See dropdown menu for the full list of over 25 size options.

📦 Quantities Available:

10, 50 & 100
Bulk and wholesale enquiries welcome – get in touch for large volume pricing.

✅ Why Choose Aluminium Washers?

• Ultra-Lightweight: Ideal where weight-saving matters (aerospace, racing, electronics)
• High Strength-to-Weight Ratio: Withstands pressure, shear, bending & vibration
• Corrosion Resistant: Great for outdoor, marine & exposed environments
• Non-Magnetic & Conductive: Perfect for electrical and sensitive technical assemblies
• Temperature Strengthens Aluminium: Performs better in cold conditions
• Non-Sparking & Non-Toxic: Use safely in fuel, gas, and industrial applications
• Universally Compatible: Use with metal, plastic, rubber or composite surfaces

🛠️ Common Applications:

• Automotive repair & maintenance (oil sump plugs, brake systems)
• Aerospace fittings & lightweight structures
• Electrical panels, switchboards & grounding
• Marine & agricultural machinery
• Plumbing & pneumatic seals
• Any job needing reliable, rust-free sealing washers

🚚 Shipping & Dispatch:

• Free UK Delivery via Royal Mail 48

Optional Shipping Upgrades:

• Royal Mail 24 – £1
• FedEx Tracked Next Day – £5
• Same Day Dispatch for orders placed before 1PM (Mon–Fri)
• All international orders sent via Tracked & Signed Delivery
• VAT Invoice Supplied With All Orders

🛠️ Aluminium Washers – Strength Without the Weight. Trusted in Every Industry.

From aerospace engineers to everyday mechanics, these aluminium sealing washers are a must-have item for any toolkit or parts bin. Keep your work lightweight, tight, and corrosion-free with this durable washer selection.