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Expansion Sealing Plugs - Metric

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These metric-sized expansion sealing plugs are intended to offer efficient, high-pressure sealing of apertures or cavities, obstructing the entry of dust, moisture, air and gas.

The expander ball is inserted into the plug sleeve. The plug ball's separate grooved sealing rings are pushed into the housing. It stays in place with the ball pressed up against the counterbore shoulder.

It is simple to install since it does not need tapping, reaming, machining of O-ring grooves, or using tapes or sealants. Commonly used in applications, including fluid power systems, pneumatic systems, hydraulic systems, industrial and valves.

  • Material: Plug body: case hardened steel (zinc-plated), stainless steel or aluminium
  • Ball: heat-treated bearing steel or stainless steel

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Product SKUs information
Item Code Price range Availability Ball Material d2 +0.1|-0.0 l2 d3 max Body Material l1 d1 View
351 In stock - Delivery conditions may apply, visit our FAQs
Steel
4.0
5.2
3.3
303 Stainless Steel
4.0
4.0
413 In stock - Delivery conditions may apply, visit our FAQs
303 Stainless Steel
4.0
5.2
3.3
Aluminium
4.0
4.0
469 In stock - Delivery conditions may apply, visit our FAQs
303 Stainless Steel
5.0
7.1
4.3
303 Stainless Steel
5.5
5.0
151 In stock - Delivery conditions may apply, visit our FAQs
Steel
6.0
8.7
5.3
303 Stainless Steel
6.5
6.0
Request the lead time here
316 Stainless Steel
7.0
10.2
6.4
316 Stainless Steel
7.5
7.0
Request the lead time here
316 Stainless Steel
8.0
11.6
7.4
316 Stainless Steel
8.5
8.0
Request the lead time here
316 Stainless Steel
9.0
13.6
8.4
316 Stainless Steel
10.0
9.0
Request the lead time here
Steel
9.0
13.6
8.4
Zinc Plated Steel
10.0
9.0
64 In stock - Delivery conditions may apply, visit our FAQs
303 Stainless Steel
9.0
13.6
8.4
Aluminium
10.0
9.0
Request the lead time here
Steel
12.0
17.9
10.6
303 Stainless Steel
13.0
12.0
Request the lead time here
316 Stainless Steel
14.0
20.6
12.7
316 Stainless Steel
15.0
14.0
Request the lead time here
316 Stainless Steel
16.0
23.4
14.7
316 Stainless Steel
17.0
16.0
Request the lead time here
303 Stainless Steel
16.0
23.4
14.7
Aluminium
17.0
16.0
Request the lead time here
Steel
16.0
23.4
14.7
Zinc Plated Steel
17.0
16.0
25 In stock - Delivery conditions may apply, visit our FAQs
Steel
20.0
30.1
18.7
303 Stainless Steel
22.0
20.0
Request the lead time here
Steel
22.0
34.0
20.7
303 Stainless Steel
25.0
22.0
Request the lead time here
316 Stainless Steel
3.0
4.6
2.2
316 Stainless Steel
3.6
3.0
28 In stock - Delivery conditions may apply, visit our FAQs
Steel
3.0
4.6
2.2
303 Stainless Steel
3.6
3.0
Request the lead time here
316 Stainless Steel
5.0
7.1
4.3
316 Stainless Steel
5.5
5.0
1147 In stock - Delivery conditions may apply, visit our FAQs
303 Stainless Steel
5.0
7.1
4.3
Aluminium
5.5
5.0
    • of 4
Expansion Sealing Plug 4.0 4.0 303 Stainless Steel

20250294


Stock Levels
351 In stock - Delivery conditions may apply, visit our FAQs
Attributes
  • d1
    4.0
  • l1
    4.0
  • l2
    5.2
  • d2 +0.1|-0.0
    4.0
  • d3 max
    3.3
Quick View
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Expansion Sealing Plug 4.0 4.0 Aluminium

20250300


Stock Levels
413 In stock - Delivery conditions may apply, visit our FAQs
Attributes
  • d1
    4.0
  • l1
    4.0
  • l2
    5.2
  • d2 +0.1|-0.0
    4.0
  • d3 max
    3.3
Quick View
View Product >
Expansion Sealing Plug 5.0 5.5 303 Stainless Steel

20250324


Stock Levels
469 In stock - Delivery conditions may apply, visit our FAQs
Attributes
  • d1
    5.0
  • l1
    5.5
  • l2
    7.1
  • d2 +0.1|-0.0
    5.0
  • d3 max
    4.3
Quick View
View Product >
Expansion Sealing Plug 6.0 6.5 303 Stainless Steel

20250386


Stock Levels
151 In stock - Delivery conditions may apply, visit our FAQs
Attributes
  • d1
    6.0
  • l1
    6.5
  • l2
    8.7
  • d2 +0.1|-0.0
    6.0
  • d3 max
    5.3
Quick View
View Product >
Expansion Sealing Plug 7.0 7.5 316 Stainless Steel

20250447


Stock Levels
Request the lead time here
Attributes
  • d1
    7.0
  • l1
    7.5
  • l2
    10.2
  • d2 +0.1|-0.0
    7.0
  • d3 max
    6.4
Quick View
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Expansion Sealing Plug 8.0 8.5 316 Stainless Steel

20250492


Stock Levels
Request the lead time here
Attributes
  • d1
    8.0
  • l1
    8.5
  • l2
    11.6
  • d2 +0.1|-0.0
    8.0
  • d3 max
    7.4
Quick View
View Product >
Expansion Sealing Plug 9.0 10.0 316 Stainless Steel

20250546


Stock Levels
Request the lead time here
Attributes
  • d1
    9.0
  • l1
    10.0
  • l2
    13.6
  • d2 +0.1|-0.0
    9.0
  • d3 max
    8.4
Quick View
View Product >
Expansion Sealing Plug 9.0 10.0 Zinc Plated Steel

20250560


Stock Levels
Request the lead time here
Attributes
  • d1
    9.0
  • l1
    10.0
  • l2
    13.6
  • d2 +0.1|-0.0
    9.0
  • d3 max
    8.4
Quick View
View Product >
Expansion Sealing Plug 9.0 10.0 Aluminium

20250553


Stock Levels
64 In stock - Delivery conditions may apply, visit our FAQs
Attributes
  • d1
    9.0
  • l1
    10.0
  • l2
    13.6
  • d2 +0.1|-0.0
    9.0
  • d3 max
    8.4
Quick View
View Product >
Expansion Sealing Plug 12.0 13.0 303 Stainless Steel

20250638


Stock Levels
Request the lead time here
Attributes
  • d1
    12.0
  • l1
    13.0
  • l2
    17.9
  • d2 +0.1|-0.0
    12.0
  • d3 max
    10.6
Quick View
View Product >
Expansion Sealing Plug 14.0 15.0 316 Stainless Steel

20250690


Stock Levels
Request the lead time here
Attributes
  • d1
    14.0
  • l1
    15.0
  • l2
    20.6
  • d2 +0.1|-0.0
    14.0
  • d3 max
    12.7
Quick View
View Product >
Expansion Sealing Plug 16.0 17.0 316 Stainless Steel

20250744


Stock Levels
Request the lead time here
Attributes
  • d1
    16.0
  • l1
    17.0
  • l2
    23.4
  • d2 +0.1|-0.0
    16.0
  • d3 max
    14.7
Quick View
View Product >
Expansion Sealing Plug 16.0 17.0 Aluminium

20250751


Stock Levels
Request the lead time here
Attributes
  • d1
    16.0
  • l1
    17.0
  • l2
    23.4
  • d2 +0.1|-0.0
    16.0
  • d3 max
    14.7
Quick View
View Product >
Expansion Sealing Plug 16.0 17.0 Zinc Plated Steel

20250768


Stock Levels
Request the lead time here
Attributes
  • d1
    16.0
  • l1
    17.0
  • l2
    23.4
  • d2 +0.1|-0.0
    16.0
  • d3 max
    14.7
Quick View
View Product >
Expansion Sealing Plug 20.0 22.0 303 Stainless Steel

20250836


Stock Levels
25 In stock - Delivery conditions may apply, visit our FAQs
Attributes
  • d1
    20.0
  • l1
    22.0
  • l2
    30.1
  • d2 +0.1|-0.0
    20.0
  • d3 max
    18.7
Quick View
View Product >
Expansion Sealing Plug 22.0 25.0 303 Stainless Steel

20250881


Stock Levels
Request the lead time here
Attributes
  • d1
    22.0
  • l1
    25.0
  • l2
    34.0
  • d2 +0.1|-0.0
    22.0
  • d3 max
    20.7
Quick View
View Product >
Expansion Sealing Plug 3.0 3.6 316 Stainless Steel

20250232


Stock Levels
Request the lead time here
Attributes
  • d1
    3.0
  • l1
    3.6
  • l2
    4.6
  • d2 +0.1|-0.0
    3.0
  • d3 max
    2.2
Quick View
View Product >
Expansion Sealing Plug 3.0 3.6 303 Stainless Steel

20250263


Stock Levels
28 In stock - Delivery conditions may apply, visit our FAQs
Attributes
  • d1
    3.0
  • l1
    3.6
  • l2
    4.6
  • d2 +0.1|-0.0
    3.0
  • d3 max
    2.2
Quick View
View Product >
Expansion Sealing Plug 5.0 5.5 316 Stainless Steel

20250348


Stock Levels
Request the lead time here
Attributes
  • d1
    5.0
  • l1
    5.5
  • l2
    7.1
  • d2 +0.1|-0.0
    5.0
  • d3 max
    4.3
Quick View
View Product >
Expansion Sealing Plug 5.0 5.5 Aluminium

20250355


Stock Levels
1147 In stock - Delivery conditions may apply, visit our FAQs
Attributes
  • d1
    5.0
  • l1
    5.5
  • l2
    7.1
  • d2 +0.1|-0.0
    5.0
  • d3 max
    4.3
Quick View
View Product >