Typhoon Performance Products Ltd


Custom as well as standard geometry/size bolt caps to provide protection from cellulosic, hydrocarbon and jet fire scenarios are available in either metric or imperial sizes. Tap on and screw fit fitting are available.

Standard bolt caps are sized to 8.8 bolts meeting BSEN 15048, EN ISO 4014 (DIN 931) and ASTM A325/F436 are available ex stock. Bolt caps sized to other specification (such as 10.9), custom shapes, split caps for difficult access areas, screw caps for ease of cyclic bolt inspection and larger sizes are all available on a made to order basis. 

Supply is available globally direct in bulk or via distributors and also in the UK via Construction Site Supplies 

Interchar and Chartek bolt caps are supplied globally in conjunction with and on behalf of Akzo Nobel  

Re-usable sized Masking inserts are also available to make the process more productive.

Bolt Cap Technical Data

The Bolt Cap data is available in the pdf downloads available on this screen and outlines the indicative requirements as well as the performance of the 'Tapon Bolt Cap', as tested to date. Click Here for Technical data PDF download

Bolt Cap H&S Data

No special precautions are necessary when using bolt caps. Reasonable care should be taken when installing to avoid contact with the internal clips. Bolt caps are manufactured from a specially formulated compound which is stable and inert under normal atmospheric conditions. When subject to prolonged exposure above 1,200 degrees C the Cap will very gradually harden leaving a grey product form. Bolt Caps may be disposed of as normal household waste where permitted by the Local Authority. Click Here for H&S data PDF download

Documents in .PDF format, Adobe Reader required. Document link will open in a new browser window.