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Rilsan Coated Fasteners

Commonly used in the water industry to mechanically compress seals on pipeline flanges, valves, reducers and pumps, Rilsan bolts, nuts and washers offer long term corrosion protection, UV stability and are designed to work in harmony with many of the associated products and systems.


• Environmentally sound.
• No volatile organic compound release.
• High performance corrosion resistance.
• Resistant to high levels of deformation.
• Renewable raw material of plant origin.
• UV resistant.


WRAS Approved Product
Grade 4.6
Bolts to DIN 601
Nuts to DIN 555
Washers to DIN 125A


Standard sizes ex-stock.
Specials available on enquiry.

Technical Support

As a manufacturer we technically support all the products that we offer which: -

• Saves time.
• Saves long term expense.
• Reduces leakage.
• Increases flange integrity.
• Decreases health & safety risk.

Whenever there is a sealing issue or technical question regarding one of our products then please get in touch on 0141 620 1666, Email us or simply fill out our online enquiry form below..

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WRAS Approved Product


Contact William Johnston & Company Limited

For more information about our Rilsan Coated Fasteners products that are available world wide, contact us on +44 (0)141 620 1666, Email us or simply complete our online Enquiry Form.

Failure to select the correct materials or products can result in damage to plant and equipment and personal injury. In specific applications, particularly where critical conditions exist, we suggest you contact us and we will consider with you the most suitable material or product. However, information supplied by William Johnston & Company Limited is intended only as technical co-operation and as a guide to the various uses of different products. No warranty is given in respect of information or recommendations by William Johnston & Company Limited which are only given for guidance and without any guarantee. The customer must satisfy themselves on the suitability of the material or product for the intended purpose. The correct fitting of products is the responsibility of the customer.

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