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Self-Centring Screw Seal | Steel with Rubber Sealing Lip | Zinc Plated | by Wurth
The self-centring screw seal is designed for M18 screws, featuring a steel washer with a moulded-on rubber sealing lip for optimal sealing performance. Ideal for automotive and industrial applications, it ensures secure sealing under high pressure and vacuum conditions, while its reusable design minimizes waste and enhances durability.
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Product Name/Title: Self-Centring Screw Seal | Steel with Rubber Sealing Lip | Zinc Plated | by Wurth
Brand: Wurth
SKU: 4690018
Alternatively Known As: Self-centering screw seal washer, rubber sealed screw washer, metric hex bolt sealing washer
Technical Specifications
- Suitable for screw: M18
- Internal diameter (d1): 18 mm
- Outer diameter (d2): 27 mm
- Thickness (h1): 2 mm
- Material: Steel
- Shore A hardness: 70 +/- 5
- Surface: Zinc plated, blue passivated
- Temperature resistance: -35 to 120 °C
- Through-hole according to DIN EN 202723 f: 19 mm
- Through-hole according to DIN EN 202723 m: 20 mm
- Dimensions (H x L x W): 2mm x 27mm x 27mm
- Weight: 0.02 kg
Key Features
- Steel washer with moulded-on rubber sealing lip (NBR70)
- Zinc plated steel, blue passivated (A2K) surface
- Optimal sealing effect due to precisely defined lip formation
- No pressing out under extreme pressure due to metal-metal contact
- Low tightening torque required
- No retightening of installed seal necessary
- Reusable and easy, quick, reliable, and secure installation
- Overhead installation possible without special machining of metal surface
- Temperature resistant from -35 °C to +120 °C
- Rubber hardness 65-75 Shore A
Professional Installation Requirements
- Installation can be performed without special machining; professional installation recommended for optimal sealing performance.
Applications
- Sealing screw heads primarily with metric hexagon head bolts according to DIN standards
- Sealing flange connections under high pressure and vacuum conditions
- Suitable for use in automotive, machinery, and industrial equipment requiring secure screw sealing
Standards & Compliance
- Complies with AS/NZS 4801 – Occupational Health & Safety Management Systems
Environmental Benefits
- Reusable design reduces waste and replacement frequency
- Durable materials extend product life and reduce environmental impact
Warranty Information
Standard manufacturer warranty against defects applies.
Available Now
Wurth Screw Seal Self-Centring is available for immediate purchase, ideal for industrial and mechanical applications requiring reliable screw sealing.
