Contact Us

Industrial Steam Boiler Spares

William Johnston & Company Limited ISO 9001:2014, stock a full range of industrial steam boiler spares. Our knowledge in this specialised area is extensive, and we are happy to assist you in selecting the right replacement part for your steam boiler.

All the products below are stocked in our Glasgow factory, where production is centred round the manufacture of gaskets in a wide variety of materials. Some are suitable for steam, others for food contact, diesel engine exhaust etc.

We stock many grades or rubber and sponge in sheet form and can offer these in converted form. Sheet non-asbestos jointing is stocked and converted to fulfil the technical and delivery requirements of many customers sealing against steam, for calorifiers, heat-exchanger and many other application areas.

Glass and Ceramic Rope

Glass and Ceramic Webbing & ladder Tape

Braided steam packing

Packing sleeves & spindles

All valve inlet and outlet flanges covered. We offer high temperature to 1000°C.

Gauge cocks in various patterns

Woven boiler door joints to 35 Bar stocked


Metric & Imperial Engineering Studs

Tubular Gauge Glass
Reflex Glasses & Gaskets

Furnace Inspection Box

Furnace Inspection Glasses

Please contact our experienced staff in Glasgow or Inverness for advice on which is the best seal for your steam boiler, calorifiers, pressure vessel or storage tank.

Return to Products >

Contact William Johnston & Company Limited

For more information about our Industrial Steam Boiler Spares 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