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Integral Seal Bolts

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Sealing bolts are a type of fastener designed with an o-ring to provide secure bi-directional protection against contaminates such as gases and fluids in various applications, minimising the risk of damage to sensitive equipment. They prevent the entry of water, dust, or other contaminants, ensuring a secure, reliable connection.

This range of sealing bolts with a hexagonal head, incorporates an O-ring which is compressed, squeezed into a precision groove machined under the head of the bolt, and the mating surface to complete the seal. They are manufactured from stainless steel, which provides good corrosion resistance and is slightly magnetic.

Integral Seal Bolts are used in threaded and non-threaded holes in applications such as pipes, valves or pumps. Sealing bolts are used in threaded and non-threaded holes in applications such as cabinets or used in the automotive and electric industries. Please note: Our seal bolts are designed for use in applications where sealing properties are required. It could be confused with standard fasteners, these do not require sealing properties and with an O-ring you will not get a sealing property like you get with seal screws and may damage the ring.

  • Designed with a sealing feature to provide a secure and watertight connection to various applications, minimising the risk of loosening due to vibration or movement.
  • Prevent the entry of water, dust, or other contaminants, ensuring a secure, reliable connection.
  • It has a hexagonal head and incorporates an O-ring which is compressed, squeezed between the head and the mating surface.
Material: 316 Stainless Steel, 303 Stainless Steel Series Code:

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81 results
Product SKUs information
Item Code Price range Availability h1 max Material A/F d1 l1 d2 ±0.05 View
£ 1.5531 - £ 2.3893 Request the lead time here
1.6
303 Stainless Steel
4.0
M2
10.0
2.35
£ 3.969 - £ 6.1061 Request the lead time here
5.5
303 Stainless Steel
13.0
M8
40.0
8.5
£ 1.3421 - £ 2.0648 Request the lead time here
2.2
303 Stainless Steel
5.5
M3
12.0
3.6
£ 1.4572 - £ 2.2418 Request the lead time here
2.2
316 Stainless Steel
5.5
M3
12.0
3.6
£ 1.8023 - £ 2.7728 14 In stock
3.0
303 Stainless Steel
7.0
M4
8.0
4.5
£ 1.9557 - £ 3.0088 Request the lead time here
3.0
303 Stainless Steel
7.0
M4
20.0
4.5
£ 2.1091 - £ 3.2448 Request the lead time here
3.7
316 Stainless Steel
8.0
M5
12.0
5.6
£ 2.0324 - £ 3.1268 Request the lead time here
3.7
303 Stainless Steel
8.0
M5
20.0
5.6
£ 2.7802 - £ 4.2772 1 In stock
4.2
303 Stainless Steel
10.0
M6
12.0
6.8
£ 3.1061 - £ 4.7787 310 In stock
4.2
316 Stainless Steel
10.0
M6
16.0
6.8
£ 3.1061 - £ 4.7787 Request the lead time here
4.2
303 Stainless Steel
10.0
M6
30.0
6.8
£ 3.7197 - £ 5.7227 Request the lead time here
5.5
316 Stainless Steel
13.0
M8
12.0
8.5
£ 3.969 - £ 6.1061 Request the lead time here
6.6
303 Stainless Steel
16.0
M10
16.0
10.6
£ 4.3333 - £ 6.6666 369 In stock
5.5
316 Stainless Steel
13.0
M8
25.0
8.5
£ 3.969 - £ 6.1061 43 In stock
6.6
303 Stainless Steel
16.0
M10
20.0
10.6
£ 4.7359 - £ 7.2861 Request the lead time here
6.6
316 Stainless Steel
16.0
M10
30.0
10.6
£ 5.7119 - £ 8.7876 Request the lead time here
7.7
316 Stainless Steel
18.0
M12
30.0
12.85
£ 5.7119 - £ 8.7876 Request the lead time here
7.7
316 Stainless Steel
18.0
M12
50.0
12.85
£ 4.4004 - £ 6.7699 Request the lead time here
7.7
303 Stainless Steel
18.0
M12
40.0
12.85
£ 2.0899 - £ 3.2153 Request the lead time here
3.0
316 Stainless Steel
7.0
M4
16.0
4.5
  • of 5
Integral Seal Bolt M2 10.0 303 Stainless Steel

20257972

Price Range
£ 2.3893 - £ 1.5531

Stock Levels
Request the lead time here
Attributes
  • d1
    M2
  • l1
    10.0
  • A/F
    4.0
  • h1 max
    1.6
  • d2 ±0.05
    2.35
Integral Seal Bolt M8 40.0 303 Stainless Steel

20258016

Price Range
£ 6.1061 - £ 3.969

Stock Levels
Request the lead time here
Attributes
  • d1
    M8
  • l1
    40.0
  • A/F
    13.0
  • h1 max
    5.5
  • d2 ±0.05
    8.5
Integral Seal Bolt M3 12.0 303 Stainless Steel

20258061

Price Range
£ 2.0648 - £ 1.3421

Stock Levels
Request the lead time here
Attributes
  • d1
    M3
  • l1
    12.0
  • A/F
    5.5
  • h1 max
    2.2
  • d2 ±0.05
    3.6
Integral Seal Bolt M3 12.0 316 Stainless Steel

20258078

Price Range
£ 2.2418 - £ 1.4572

Stock Levels
Request the lead time here
Attributes
  • d1
    M3
  • l1
    12.0
  • A/F
    5.5
  • h1 max
    2.2
  • d2 ±0.05
    3.6
Integral Seal Bolt M4 8.0 303 Stainless Steel

20258122

Price Range
£ 2.7728 - £ 1.8023

Stock Levels
14 In stock
Attributes
  • d1
    M4
  • l1
    8.0
  • A/F
    7.0
  • h1 max
    3.0
  • d2 ±0.05
    4.5
Integral Seal Bolt M4 20.0 303 Stainless Steel

20258184

Price Range
£ 3.0088 - £ 1.9557

Stock Levels
Request the lead time here
Attributes
  • d1
    M4
  • l1
    20.0
  • A/F
    7.0
  • h1 max
    3.0
  • d2 ±0.05
    4.5
Integral Seal Bolt M5 12.0 316 Stainless Steel

20258252

Price Range
£ 3.2448 - £ 2.1091

Stock Levels
Request the lead time here
Attributes
  • d1
    M5
  • l1
    12.0
  • A/F
    8.0
  • h1 max
    3.7
  • d2 ±0.05
    5.6
Integral Seal Bolt M5 20.0 303 Stainless Steel

20258283

Price Range
£ 3.1268 - £ 2.0324

Stock Levels
Request the lead time here
Attributes
  • d1
    M5
  • l1
    20.0
  • A/F
    8.0
  • h1 max
    3.7
  • d2 ±0.05
    5.6
Integral Seal Bolt M6 12.0 303 Stainless Steel

20258306

Price Range
£ 4.2772 - £ 2.7802

Stock Levels
1 In stock
Attributes
  • d1
    M6
  • l1
    12.0
  • A/F
    10.0
  • h1 max
    4.2
  • d2 ±0.05
    6.8
Integral Seal Bolt M6 16.0 316 Stainless Steel

20258337

Price Range
£ 4.7787 - £ 3.1061

Stock Levels
310 In stock
Attributes
  • d1
    M6
  • l1
    16.0
  • A/F
    10.0
  • h1 max
    4.2
  • d2 ±0.05
    6.8
Integral Seal Bolt M6 30.0 303 Stainless Steel

20258382

Price Range
£ 4.7787 - £ 3.1061

Stock Levels
Request the lead time here
Attributes
  • d1
    M6
  • l1
    30.0
  • A/F
    10.0
  • h1 max
    4.2
  • d2 ±0.05
    6.8
Integral Seal Bolt M8 12.0 316 Stainless Steel

20258412

Price Range
£ 5.7227 - £ 3.7197

Stock Levels
Request the lead time here
Attributes
  • d1
    M8
  • l1
    12.0
  • A/F
    13.0
  • h1 max
    5.5
  • d2 ±0.05
    8.5
Integral Seal Bolt M10 16.0 303 Stainless Steel

20258504

Price Range
£ 6.1061 - £ 3.969

Stock Levels
Request the lead time here
Attributes
  • d1
    M10
  • l1
    16.0
  • A/F
    16.0
  • h1 max
    6.6
  • d2 ±0.05
    10.6
Integral Seal Bolt M8 25.0 316 Stainless Steel

20258474

Price Range
£ 6.6666 - £ 4.3333

Stock Levels
369 In stock
Attributes
  • d1
    M8
  • l1
    25.0
  • A/F
    13.0
  • h1 max
    5.5
  • d2 ±0.05
    8.5
Integral Seal Bolt M10 20.0 303 Stainless Steel

20258528

Price Range
£ 6.1061 - £ 3.969

Stock Levels
43 In stock
Attributes
  • d1
    M10
  • l1
    20.0
  • A/F
    16.0
  • h1 max
    6.6
  • d2 ±0.05
    10.6
Integral Seal Bolt M10 30.0 316 Stainless Steel

20258573

Price Range
£ 7.2861 - £ 4.7359

Stock Levels
Request the lead time here
Attributes
  • d1
    M10
  • l1
    30.0
  • A/F
    16.0
  • h1 max
    6.6
  • d2 ±0.05
    10.6
Integral Seal Bolt M12 30.0 316 Stainless Steel

20258658

Price Range
£ 8.7876 - £ 5.7119

Stock Levels
Request the lead time here
Attributes
  • d1
    M12
  • l1
    30.0
  • A/F
    18.0
  • h1 max
    7.7
  • d2 ±0.05
    12.85
Integral Seal Bolt M12 50.0 316 Stainless Steel

20258696

Price Range
£ 8.7876 - £ 5.7119

Stock Levels
Request the lead time here
Attributes
  • d1
    M12
  • l1
    50.0
  • A/F
    18.0
  • h1 max
    7.7
  • d2 ±0.05
    12.85
Integral Seal Bolt M12 40.0 303 Stainless Steel

20258665

Price Range
£ 6.7699 - £ 4.4004

Stock Levels
Request the lead time here
Attributes
  • d1
    M12
  • l1
    40.0
  • A/F
    18.0
  • h1 max
    7.7
  • d2 ±0.05
    12.85
Integral Seal Bolt M4 16.0 316 Stainless Steel

20258733

Price Range
£ 3.2153 - £ 2.0899

Stock Levels
Request the lead time here
Attributes
  • d1
    M4
  • l1
    16.0
  • A/F
    7.0
  • h1 max
    3.0
  • d2 ±0.05
    4.5