FireNut - Trelleborg Applied Technologies

FireNut™

Wherever hydrocarbons are transported, the pipes are flanged are 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.

Tailored specifications

FireNut™ can be made to fit any shape and size to suit individual requirements.

High resistance

High abrasion, blast, impact, jet fire, ozone, UV, most solvents  and seawater resistant

Protection

Excellent HISC, corrosion, fire mechanical and wear protection

Key Applications

New bolts

New nuts

Old bolts

Old nuts

Gallery

Technical specifications

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 
             
                 
  Size D3 [mm] D[mm]
D2[mm]
H1[mm]
H2[mm]
H3[mm]
R
 

1/2 UNC - 13

13 40 26 41 20 14  10
  5/8 UNC - 11
16 45 31 48 23 17  11
  3/4 UNC - 10
19 51 37 54 25 20  12
  7/8 UNC - 9
22 56 42 60 28 23  13
  1 UNC - 8
25 62 48 83 48 28  14
  1 - 1/8 UN8
29 67 53 90 51 31  15
  1 - 1/4 UN8
32 73 59 96 54 34  16
  1 - 3/8 UN8
35 78 64 102 57 37  17
  1 - 1/2 UN8
38 84 70 109 60 40  18
  1 - 5/8 UN8
41 89 75 115 64 43  19
  1 - 3/4 UN8  44 95 81 121 67 47  20
  1 - 7/8 UN8  48 100 86 128 70 50  21
  2 UN8  51 106 92 134 73 53  22
  2 - 1/4 UN8
57 117 103 147 79 59  23
  2 - 1/2 UN8  64 128 114 159 86 66  24
  2 - 3/4 UN8  70 139 125 172 92 72  26
  3 UN8  76 150 136 185 98 79  28
  3 - 1/2 UN8  89 172 158 210 111 91  30
Product sheet
Trelleborg Offshore Firenut

FireNut


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