Radium NPT Round Internal Hex Plug

NPT round internal hex plug engineered by Radium Engineering for sealing unused NPT (National Pipe Thread) ports. This CNC-machined billet aluminum plug features a compact internal hex design for a clean, cosmetic appearance with reliable NPT thread sealing.

Available Part Numbers

• 14-0172: 1/8" NPT Round Internal Hex Plug
• 14-0173: 3/8" NPT Round Internal Hex Plug

Key Features

• ✓ CNC-machined billet aluminum construction
• ✓ Round internal hex design
• ✓ Compact and cosmetic appearance
• ✓ NPT tapered thread sealing
• ✓ Available in 1/8" and 3/8" NPT sizes
• ✓ Professional-grade motorsport component

Technical Specifications

• Part Numbers: 14-0172, 14-0173
• Construction: CNC-machined billet aluminum
• Design: Round internal hex
• Thread Type: NPT (National Pipe Thread)
• Available Sizes: 1/8" NPT, 3/8" NPT
• Application: Universal NPT ports

Applications

Ideal for sealing unused NPT ports on catch cans, manifolds, turbo oil drains, and other components. Perfect for motorsport, track, or high-performance street builds where clean, reliable NPT port sealing is required.

Benefits

• Internal hex provides clean, low-profile appearance
• NPT tapered threads ensure reliable sealing
• CNC-machined precision ensures proper fitment
• Multiple NPT sizes accommodate various applications
• Professional motorsport-grade construction

Important Note: NPT (National Pipe Thread) fittings seal by the intentional interference created by the tapered threads meshing together. Always use a small amount of PTFE paste or tape on NPT threads and tighten to finger tight, then add another 1.5 to 3 turns until tight.

Fast shipping available throughout Australia. Lead times may vary - contact us for current availability.