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 ābiteā into the surrounding material, forming independent seals and retaining rings. Sizes range from 0.093 to 0.656 inches.
- Plug Diameter: 0.312 inches
- Max. Sealable Passageway Diameter: 0.281 inches
- Proof Pressure: 24,000 psi
- Plug Material: Stainless Steel
- Housing Material: Stainless Steel, or Titanium
General Performance
- Class 1: Short 12, Long 18
- Class 2: Short 14, Long 20
- Class 3: Short 16, Long 24
Proof Pressure (psi x 1000)
Materials
- Pin: 416 CRES, QQ-S-763C, Rc 20-34, Passivated & Wax
- Plug: 416 CRES, QQ-S-763C, Rc 20-34, Passivated
Part Numbers & Specifications
- PLGA3120020A: Short, 0.3124 - 0.3149
- PLGA3121020A: Long, 0.3124 - 0.3149
All dimensions are in inches. This information is for reference only.
Replacement Parts & Accessories
- CUTA3120203A: Installation Tool Set
- CUTA3120103B: Extraction Tool Set
- CUTA3121103A: Gauge
- PLGA3220020A: Short Oversize Lee Plug
- PLGA3221020A: Long Oversize Lee Plug
For dimensions, please refer to the Part Numbers & Specifications tab.
Technical Hydraulic Handbook of Aerospace, Energy, and Motorsport Solutions Page A28 (see documents)
Installation Procedure: PS 203 REV L: Design Criteria and Installation and Extraction Procedures for Lee Plug Expansion Plugs (see documents)
Installation & Manufacturing Tools: Download CUTA3120203A: Plug Installation Tool (see documents), Download CUTA3120103B: Plug Extraction Tool Set (see documents), Download CUTA3121103A: Plug Gauge (see documents)
CAD Envelopes: 312 Stainless Steel Lee Plug Long Model, 312 Stainless Steel Lee Plug Short Model (see resources)
Key Product Facts
- Plug Diameter: 0.312 inches
- Max. Sealable Passageway Diameter: 0.281 inches
- Proof Pressure: 24,000 psi
- Plug Material: Stainless Steel
- Housing Material: Stainless Steel, or Titanium