Two large diameter wooden plugs on concrete surface, used in custom municipal and industrial applications.

Large Wood Plugs

Large wood plugs are used to seal oversized openings, large pipe systems, containment structures, heavy industrial equipment, and more. These plugs are manufactured to exact diameter and taper specifications so they can seat securely in large openings and seal reliably.

H.A. Stiles supplies large wood plugs in custom diameters up to and beyond 16 inches, depending on your requirements. Each plug is turned or shaped to meet the demands of high-capacity sealing and industrial containment.

View additional related components in our wood plugs, bungs, and wedges category.

Use Cases & Applications

  • Sealing large municipal or industrial pipe systems

  • Temporary closure of oversized conduit openings

  • Emergency containment in large water or liquid systems

  • Marine and shipyard hull sealing for large openings

  • Industrial tank or vessel maintenance shutdowns

  • Large-diameter hole sealing during infrastructure repairs

Industries & Work Environments

  • Municipal water and wastewater utilities

  • Industrial manufacturing and processing plants

  • Marine construction and ship repair facilities

  • Pipeline and infrastructure contractors

  • Energy production and utility maintenance

  • Equipment manufacturing and heavy fabrication

Wood Materials

  • Pine

  • Poplar

  • Particle Board

Diameter & Sizing

  • Custom diameters up to and beyond 16 inches

  • Manufactured for oversized hole and pipe sealing

  • Sized according to project specifications

Plug Design Options 

  • Flat-faced plugs for structural closure

  • Tapered plugs for pressure sealing

  • Precision shaping for consistent seating

Production & Finishing

  • Precision turning and surface finishing

  • Optional labeling, painting, or treatment

  • Produced to meet customer specifications

H.A. Stiles circular logo with transparent background.

Request a Quote for Large Wood Plugs

If your project requires oversized wood plugs, our team can supply plugs to the exact diameter, taper, and material requirements you specify. Submit your project details to receive a custom quote and production timeline.

If you have defined specifications, or need help confirming dimensions, species, or secondary operations, contact our team. We support production-focused projects and are ready to help!