Rubber covered lock washers, also known as SELOC washers, are self-sealing, vibration-resistant washers designed to provide secure fastening and help protect against moisture, oxidation and contaminants.

 

 

 

Benefits of SELOC Washers

SELOC washers combine a rubber covering with a serrated metal washer. When the fastener is tightened, the metal serrations pierce the rubber and engage with the mating surface, providing a locking action.

 

Key benefits include:

• Vibration resistance: Helps resist movement at the fastening point.
• Sealing protection: Helps prevent the ingress of water, air, lubricants and other contaminants.
• Corrosion protection: The rubber covering helps protect surface finishes against moisture and oxidation.
• Surface protection: Suitable for use on compatible painted, plated and enamelled surfaces.

 

Applications of Rubber Covered Lock Washers

SELOC washers are commonly used with screws and bolts to seal panels, equipment cases, electrical enclosures and assemblies with clearance holes or slots. They are suitable for applications where fastening security and environmental protection are important.

 

Selecting the Right SELOC Washer

When choosing a rubber covered lock washer, consider the fastener size, application environment, chemical compatibility and operating temperature. Available specifications vary by product, so consult the manufacturer's technical datasheet to confirm suitability.

 

 

 

Looking for rubber covered lock washers? Contact our team for product information, sizing guidance and availability for your application.

Call us on 01226 273 700 or email us at ask@ashton-group.co.uk

 

 

Frequently asked questions 

1. What are rubber covered lock washers (SELOC washers)?
Rubber covered lock washers, also known as SELOC washers, combine a serrated metal washer with a rubber covering to provide a locking action, help seal fastening points and protect compatible surfaces from moisture and contaminants.

2. What are SELOC washers used for?
SELOC washers are used in industrial machinery, electrical enclosures, equipment housings, metal panels and other bolted assemblies where vibration resistance, sealing and surface protection are required.

3. Do rubber covered lock washers prevent vibration loosening?
Rubber covered lock washers feature serrated metal components designed to resist movement at the fastening interface. Their effectiveness depends on the application, installation method, fastener design and operating conditions.

4. Are rubber covered lock washers suitable for preventing water ingress?
Rubber covered lock washers can help reduce water ingress around fastener holes. However, sealing performance depends on the washer design, compression, surface condition and installation. They should not be assumed to provide a waterproof or pressure-rated seal without manufacturer confirmation.

5. How do I choose the correct SELOC washer size?
To select the correct SELOC washer, check the bolt or screw diameter, washer dimensions, material compatibility and operating environment. Consider temperature, moisture and chemical exposure, and consult the manufacturer's technical datasheet to confirm suitability.