Red Fibre Sealing Washers – Metric Sizes M5 to M20 | Vulcanised Flat Fibre Washers | Non-Conductive, Chemical Resistant

🔴 Red Fibre Sealing Washers – Metric Sizes M5 to M20

These high-quality red fibre sealing washers are manufactured from vulcanised fibre-reinforced polyamide (nylon) – ideal for sealing, insulating, and cushioning in a wide range of mechanical and electrical applications.

Built to BS 6091 standards (International equivalents: IEC 6671-2-3 / DIN 7737), these washers provide excellent resistance to moisture, heat, oils, and chemicals – while remaining lightweight, non-magnetic, and non-conductive.

Perfect for situations where metal washers are unsuitable, such as in electrical assemblies or non-metallic surface contacts.

📏 Sizes Available:

All dimensions listed as Inner Diameter (I/D) × Outer Diameter (O/D) × Thickness

• M5: 5mm x 9mm x 1mm
• M6: 6mm x 10mm x 1mm
• M8: 8mm x 12mm x 1mm
• M10: 10mm x 14mm / 16mm x 1mm
• M12: 12mm x 18mm x 1.5mm / 12mm x 24mm x 2mm
• M14: 14mm x 20mm x 1.5mm
• M16: 16mm x 22mm x 1.5mm
• M18: 18mm x 24mm x 1.5mm / 18mm x 29mm x 2mm
• M20: 20mm x 24mm / 26mm x 1.5mm

📦 Quantities Available:

10, 25, 50 & 100
Bulk orders welcome – contact us for wholesale or trade pricing.

✅ Key Features & Benefits:

• Vulcanised Fibre Construction: High strength with excellent resistance to wear, oils, and chemicals
• Electrical Insulation: Completely non-conductive – ideal for terminals, switchboards, and fuse panels
• Lightweight & Flexible: Easier to fit and install in sensitive or space-limited environments
• Corrosion-Free: Will not rust or degrade like traditional metal washers
• Wide Temperature Tolerance: Great for both low and moderately high temperature ranges
• RoHS Compliant: Safe for use in electrical and electronic equipment manufacturing
• Conforms to BS 6091, IEC 6671-2-3 (DIN 7737) – Industry-approved quality

🛠️ Common Applications:

• Electrical isolation & insulation
• Plumbing & pneumatic sealing
• Automotive trim & dashboard assemblies
• Low-pressure hydraulic systems
• Sealing against oils, water, or solvents
• Enclosures & terminal panel protection
• Anywhere requiring non-metallic, flat washers

🚚 Shipping & Dispatch:

• FREE UK Delivery via Royal Mail 48

Express Options Available:

• Royal Mail 24 – £1
• FedEx Tracked Next Day – £5
• Same Day Dispatch on orders placed before 1PM (Monday–Friday)
• International Shipping: All global orders sent via Tracked & Signed delivery
• VAT Invoice Supplied with Every Order

🧰 Red Fibre Washers – Lightweight, Non-Conductive & Chemically Resistant. Trusted Across Multiple Industries.

Add reliable insulation and durable sealing power to your toolbox today with our premium selection of red fibre flat washers – the go-to choice for electrical, mechanical, and automotive professionals.