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Plugs

343 Stainless Steel Lee Plug®

This member of our classic Lee Plug family is ideal for installation into stainless steel manifolds. Lee plugs continue to be the simplest, most successful method for sealing cross-drilled holes. Upon installation of the pin, controlled expansion causes the lands and grooves of the plug to “bite” into the surrounding material, forming independent seals and retaining rings. Sizes range from 0.093 to 0.656 inches.

Key Product Facts
  • Plug Diameter:0.343 inches
  • Max. Sealable Passageway Diameter:0.312 inches
  • Proof Pressure:22,000 psi
  • Plug Material:Stainless Steel
  • Housing Material:Stainless Steel, or Titanium

Product Information

General Performance
 Class 1 Class 2 Class 3
Short 10 12 14
Long 18 20 22
Proof Pressure (psi x 1000)
Materials
PART MATERIAL SPECIFICATION FINISH
Pin 416 CRES QQ-S-763C, Rc 20-34 Passivated & Wax
Plug 416 CRES QQ-S-763C, Rc 20-34 Passivated
Electrical Operation

For dimensions, please refer to the Part Numbers & Specifications tab.

Part Numbers & Specifications

This table below contains the part numbers and technical specifications for this product. If you have specific questions, need a quote, or would like to request a handbook or drawing, click the red request button in the column on the far right.

Image Specifications
Dimensional View
Installation Hole Details
Part Numbers & Specifications
Part Number Size D Max. D Min. C Nom. M Nom. K Nom. L Nom. Weight (g) A Min. N Dia. Ref. W Min. Ream Dia.
Class 1
Ream Dia.
Class 2
Ream Dia.
Class 3
Request Information
PLGA3430020A Short 0.3437 0.3428 0.307 0.272 0.305 0.216 3.2 0.295 0.312 0.063 0.3437 - 0.3462 0.3437 - 0.3452 0.3437 - 0.3442 Request
PLGA3431020A Long 0.3437 0.3428 0.5 0.41 0.308 0.335 5 0.437 0.312 0.063 0.3437 - 0.3462 0.3437 - 0.3452 0.3437 - 0.3442 Request
All dimensions are in inches. This information is for reference only.

Installation & Accessories

Replacement Parts & Accessories
Part Number Description
CUTA3430203A Installation Tool Set
CUTA3430103B Extraction Tool Set
CUTA3431103A Gauge
PLGA3530020A Short Oversize Lee Plug
PLGA3531020A Long Oversize Lee Plug
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Questions?

From plugs to solenoid valves, there’s a vast array of products that The Lee Company can offer. If you’d like to discuss the best solution for your specific application or to learn more about our capabilities, use-cases, or quality standards, contact your local Lee sales engineer.