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Gasket and Bolt Sets

Introduced by William Johnston & Company Limited over 40 years ago to the drinking and waste water industries in the UK, these kits are used for joining flanged pipeline connections, valves, pumps, reducers and restraints. For drinking water applications, they combine a WRAS approved EPDM gasket of the required size along with the appropriate number of Rilsan bolts, nuts and washers together in a branded transparent bag.

All of these products supplied by William Johnston & Company Limited are WRAS and DWI approved. Other gasket types and a range of alternative bolt finishes are available.


• Reduced wastage.
• Reduced inventory value and storage space.
• Always the correct gasket and fasteners combination.


WRAS Approved Products


Some sizes available ex-stock others manufactured to order – 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

Gasket and Bolt Sets

Contact William Johnston & Company Limited

For more information about our Gasket and Bolt Sets 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.

William Johnston Accreditation