In refineries, offshore oil installations or wherever hydrocarbons are transported, the pipes are flanged and held together with nuts and bolts. In case of fire, the flanges and pipes should maintain the same level of integrity to avoid escalation. Traditional protection is to capsule the whole valve and flanges in a fire-insulated metal box - a bulky, heavy and expensive solution. The box also creates challenges during inspection and maintenance. Trelleborg has developed a jet fire protection for bolted connections to extend service life in the event of a fire. The easy to install FireNut resists both jet fire and pool fire and is tailor made to accommodate almost any bolt size. The rigid and tough design means that FireNut has extremely good resistance to mechanical damage when installed.
FireNut™ can be made to fit any shape and size to suit individual requirements.
High abrasion, blast, impact, jet fire, ozone, UV, most solvents and seawater resistant
Excellent HISC, corrosion, fire mechanical and wear protection
To meet our customers' needs, our cutting-edge solution can be used for the below application.
Below are examples of FireNut assortments
|D, FireNut™ width
H1, FireNut™ height
H2, nut height (casted nut, exceeding bolt)
H3, socket height
D2, socket diameter
T, FireNut™ wall thickness
|D [mm]||H1 [mm]||H2 [mm]||H3 [mm]||D2 [mm]||T [mm]||Thread std.||Thread size|
[Other Trelleborg Offshore products in Topside Protection
Other Trelleborg Offshore products in the Topside segment