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Expansion Sealing Plugs - Inch

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These imperial-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 Plug Type l2 d2 +0.004|-0.000 Body Material l1 d1 View
Request the lead time here
303 Stainless Steel
Standard
0.53"
0.3437"
303 Stainless Steel
0.394"
0.3437"
Request the lead time here
Steel
Standard
0.46"
0.3125"
Zinc Plated Steel
0.334"
0.3125"
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Steel
Standard
0.60"
0.3750"
303 Stainless Steel
0.433"
0.3750"
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316 Stainless Steel
Standard
0.59"
0.4062"
316 Stainless Steel
0.437"
0.4062"
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Steel
Standard
0.68"
0.4375"
Zinc Plated Steel
0.515"
0.4375"
Request the lead time here
Steel
Standard
0.71"
0.4687"
303 Stainless Steel
0.512"
0.4687"
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316 Stainless Steel
Standard
0.71"
0.4687"
316 Stainless Steel
0.512"
0.4687"
Request the lead time here
Steel
Short
0.12"
0.0937"
303 Stainless Steel
0.098"
0.0937"
Request the lead time here
303 Stainless Steel
Short
0.17"
0.1562"
303 Stainless Steel
0.125"
0.1562"
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Steel
Short
0.17"
0.1562"
303 Stainless Steel
0.125"
0.1562"
Request the lead time here
Steel
Short
0.24"
0.1875"
Zinc Plated Steel
0.187"
0.1875"
Request the lead time here
Steel
Short
0.24"
0.1875"
303 Stainless Steel
0.187"
0.1875"
Request the lead time here
316 Stainless Steel
Short
0.25"
0.2187"
316 Stainless Steel
0.187"
0.2187"
Request the lead time here
Steel
Short
0.30"
0.2500"
Zinc Plated Steel
0.225"
0.2500"
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Steel
Short
0.35"
0.2812"
Zinc Plated Steel
0.225"
0.2812"
Request the lead time here
Steel
Short
0.39"
0.3125"
Zinc Plated Steel
0.280"
0.3125"
Request the lead time here
316 Stainless Steel
Short
0.39"
0.3125"
316 Stainless Steel
0.280"
0.3125"
Request the lead time here
303 Stainless Steel
Short
0.43"
0.3437"
Aluminium
0.307"
0.3437"
Request the lead time here
316 Stainless Steel
Short
0.52"
0.4062"
316 Stainless Steel
0.365"
0.4062"
Request the lead time here
303 Stainless Steel
Standard
0.28"
0.1875"
Aluminium
0.216"
0.1875"
    • of 6
Expansion Sealing Plug 0.3437" 0.394" 303 Stainless Steel

20208684


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Standard
  • d1
    0.3437"
  • l1
    0.394"
  • l2
    0.53"
  • d2 +0.004|-0.000
    0.3437"
Quick View
View Product >
Expansion Sealing Plug 0.3125" 0.334" Zinc Plated Steel

20208677


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Standard
  • d1
    0.3125"
  • l1
    0.334"
  • l2
    0.46"
  • d2 +0.004|-0.000
    0.3125"
Quick View
View Product >
Expansion Sealing Plug 0.3750" 0.433" 303 Stainless Steel

20208745


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Standard
  • d1
    0.3750"
  • l1
    0.433"
  • l2
    0.60"
  • d2 +0.004|-0.000
    0.3750"
Quick View
View Product >
Expansion Sealing Plug 0.4062" 0.437" 316 Stainless Steel

20208790


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Standard
  • d1
    0.4062"
  • l1
    0.437"
  • l2
    0.59"
  • d2 +0.004|-0.000
    0.4062"
Quick View
View Product >
Expansion Sealing Plug 0.4375" 0.515" Zinc Plated Steel

20208868


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Standard
  • d1
    0.4375"
  • l1
    0.515"
  • l2
    0.68"
  • d2 +0.004|-0.000
    0.4375"
Quick View
View Product >
Expansion Sealing Plug 0.4687" 0.512" 303 Stainless Steel

20208882


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Standard
  • d1
    0.4687"
  • l1
    0.512"
  • l2
    0.71"
  • d2 +0.004|-0.000
    0.4687"
Quick View
View Product >
Expansion Sealing Plug 0.4687" 0.512" 316 Stainless Steel

20208899


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Standard
  • d1
    0.4687"
  • l1
    0.512"
  • l2
    0.71"
  • d2 +0.004|-0.000
    0.4687"
Quick View
View Product >
Expansion Sealing Plug 0.0937" 0.098" 303 Stainless Steel

20207946


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Short
  • d1
    0.0937"
  • l1
    0.098"
  • l2
    0.12"
  • d2 +0.004|-0.000
    0.0937"
Quick View
View Product >
Expansion Sealing Plug 0.1562" 0.125" 303 Stainless Steel

20208011


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Short
  • d1
    0.1562"
  • l1
    0.125"
  • l2
    0.17"
  • d2 +0.004|-0.000
    0.1562"
Quick View
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Expansion Sealing Plug 0.1562" 0.125" 303 Stainless Steel

20208028


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Short
  • d1
    0.1562"
  • l1
    0.125"
  • l2
    0.17"
  • d2 +0.004|-0.000
    0.1562"
Quick View
View Product >
Expansion Sealing Plug 0.1875" 0.187" Zinc Plated Steel

20208103


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Short
  • d1
    0.1875"
  • l1
    0.187"
  • l2
    0.24"
  • d2 +0.004|-0.000
    0.1875"
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Expansion Sealing Plug 0.1875" 0.187" 303 Stainless Steel

20208073


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Short
  • d1
    0.1875"
  • l1
    0.187"
  • l2
    0.24"
  • d2 +0.004|-0.000
    0.1875"
Quick View
View Product >
Expansion Sealing Plug 0.2187" 0.187" 316 Stainless Steel

20208134


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Short
  • d1
    0.2187"
  • l1
    0.187"
  • l2
    0.25"
  • d2 +0.004|-0.000
    0.2187"
Quick View
View Product >
Expansion Sealing Plug 0.2500" 0.225" Zinc Plated Steel

20208202


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Short
  • d1
    0.2500"
  • l1
    0.225"
  • l2
    0.30"
  • d2 +0.004|-0.000
    0.2500"
Quick View
View Product >
Expansion Sealing Plug 0.2812" 0.225" Zinc Plated Steel

20208257


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Short
  • d1
    0.2812"
  • l1
    0.225"
  • l2
    0.35"
  • d2 +0.004|-0.000
    0.2812"
Quick View
View Product >
Expansion Sealing Plug 0.3125" 0.280" Zinc Plated Steel

20208301


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Short
  • d1
    0.3125"
  • l1
    0.280"
  • l2
    0.39"
  • d2 +0.004|-0.000
    0.3125"
Quick View
View Product >
Expansion Sealing Plug 0.3125" 0.280" 316 Stainless Steel

20208288


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Short
  • d1
    0.3125"
  • l1
    0.280"
  • l2
    0.39"
  • d2 +0.004|-0.000
    0.3125"
Quick View
View Product >
Expansion Sealing Plug 0.3437" 0.307" Aluminium

20208349


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Short
  • d1
    0.3437"
  • l1
    0.307"
  • l2
    0.43"
  • d2 +0.004|-0.000
    0.3437"
Quick View
View Product >
Expansion Sealing Plug 0.4062" 0.365" 316 Stainless Steel

20208387


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Short
  • d1
    0.4062"
  • l1
    0.365"
  • l2
    0.52"
  • d2 +0.004|-0.000
    0.4062"
Quick View
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Expansion Sealing Plug 0.1875" 0.216" Aluminium

20208462


Stock Levels
Request the lead time here
Attributes
  • Plug Type
    Standard
  • d1
    0.1875"
  • l1
    0.216"
  • l2
    0.28"
  • d2 +0.004|-0.000
    0.1875"
Quick View
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