Trade Discount 21%
Self-Centring Screw Seal Washer | Zinc Plated Steel | Rubber Sealing Lip | Temperature Resistant | @Each of 1 | by Wurth
The Self-Centring Screw Seal Washer is designed for optimal sealing of screw heads, featuring a zinc plated steel construction and a moulded-on rubber sealing lip. Ideal for high-pressure and vacuum applications, this washer ensures reliable performance in temperature ranges from -35°C to +120°C. Perfect for industrial and mechanical uses, it offers easy installation without special machining.
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Product Name/Title: Self-Centring Screw Seal Washer | Zinc Plated Steel | Rubber Sealing Lip | Temperature Resistant | @Each of 1 | by Wurth
Brand: Wurth
SKU: 4690020
Alternatively Known As: Self-Centring Screw Seal Washer, Rubber Sealing Washer, Zinc Plated Sealing Washer, Metric Hexagon Head Bolt Seal
Technical Specifications
- Suitable for screw: M20
- Internal diameter (d1): 20 mm
- Outer diameter (d2): 30 mm
- Thickness (h1): 2 mm
- Material: Steel
- Shore A hardness: 70 +/- 5
- Surface: Zinc plated, blue passivated (A2K)
- Temperature resistance: -35 to 120 °C
- Through-hole according to DIN EN 202723 f: 21 mm
- Through-hole according to DIN EN 202723 m: 22 mm
- Dimensions (H x L x W): 2mm x 30mm x 30mm
- 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 replaces other seals used previously
- Easy, quick, reliable, and secure installation
- Overhead installation possible
- No special machining of metal surface required
- Temperature resistant from -35°C to +120°C
- Rubber seal hardness: 65-75 Shore A
Professional Installation Requirements
- Installation is straightforward and can be performed without special machining; however, professional installation is 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 environments with broad temperature ranges from -35°C to +120°C
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 applies; please refer to Wurth's warranty policy for details.
Available Now
The Wurth Screw Seal Self-Centring is available for immediate purchase, ideal for industrial and mechanical applications requiring reliable screw head sealing.
