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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.

Please note, failure to select the correct materials or products we supply (“the Products”) may result in damage to plant, equipment or property. In some instances, it may cause death or personal injury. We are not designers and do not give advice about design related matters concerning the Products. We can help and assist with the technical specifications for the Products. In specific applications, particularly where critical conditions exist, we will try to assist you within the limitations of the services that we offer. All information supplied by us is intended as technical co-operation outlining the specifications of the different Products which we supply. To the extent permitted in law, no warranty is given in respect of any information supplied by us. The customer must satisfy themselves as to the suitability of the Products for their intended application and use. The correct fitting of Products is the responsibility of the customer. Your statutory rights remain unaffected. Save in respect of death, personal injury or fraud, our entire liability to you, however arising from the supply of Products shall be limited to the £10M indemnity amount provided by our insurers.

William Johnston Accreditation