The Simpson Adhesive Piston Plug for 3/4 in. Hole Diameter is a precision-fit plastic plug from Simpson engineered to work in conjunction with the Simpson Strong-Tie Piston Plug Delivery System. This system is purpose-built for dispensing adhesive into drilled holes for threaded rod and rebar dowel installations in overhead, upwardly inclined, and horizontal orientations, as well as deep embedments and submerged (underwater) concrete conditions. The matched tolerance design between the piston plug and the drilled hole virtually eliminates the formation of voids and air pockets during adhesive dispensing, supporting consistent, reliable adhesive placement across a wide range of demanding jobsite conditions. A barbed end provides a reliable connection to the flexible extension tubing, and the model number is embossed directly on each plug for fast, accurate identification on the job.

Key Features

• Matched tolerance design - virtually eliminates voids and air pockets during adhesive dispensing, so installers get consistent adhesive coverage and reduced risk of weak points in the connection.
• Model number embossed on each plug - allows for quick, confident identification on the job site, minimizing the chance of grabbing the wrong plug size during a busy installation.
• Designed for use across multiple installation orientations and embedment depths - gives crews the flexibility to use a single plug type for overhead, horizontal, upwardly inclined, deep embedment, and underwater concrete applications without switching tools.
• Compatible with any Simpson Strong-Tie anchoring adhesive - eliminates compatibility guesswork and integrates seamlessly into existing Simpson Strong-Tie adhesive anchor workflows.
• Also suitable for glued-in-rod (GIR) installations in timber when paired with Timber-SET structural epoxy anchoring adhesive - extends the plug's value beyond concrete work, supporting high-strength rod connections in mass timber and wood structures.
• Consistent adhesive distribution along the embedment depth - supports bond quality for high-strength GIR connections, giving engineers and contractors greater confidence in structural performance.
• Barbed end for a reliable connection to flexible extension tubing - keeps the plug securely seated during dispensing to maintain placement accuracy in difficult orientations.
• Sized to fit 3/4 in. drilled hole diameter - the precise fit is what enables the matched tolerance performance, so using the correctly sized plug is essential to achieving intended results.

Why This Product

• Engineered to virtually eliminate voids - the matched tolerance fit between this plug and the drilled hole is specifically designed to reduce air pockets that can compromise adhesive anchor strength, giving installers and engineers greater confidence in bond integrity for critical threaded rod and rebar dowel connections.
• Built for the toughest installation scenarios - from overhead and upwardly inclined dispensing to deep embedments and submerged concrete, this plug is designed to maintain adhesive control in the orientations where gravity and access work against the installer.
• Dual-application versatility in one plug - the PP75 piston plug supports both drilled concrete anchor installations and glued-in-rod (GIR) timber connections when paired with Timber-SET structural epoxy anchoring adhesive, making it a practical choice for contractors working across concrete and mass timber scopes.
• Fits directly into the Simpson Strong-Tie Piston Plug Delivery System - works with any Simpson Strong-Tie anchoring adhesive, so teams already using Simpson Strong-Tie products can add piston plug delivery without introducing new systems or compatibility concerns.

Specifications

• MPN: PP75-RP10
• Brand: Simpson Strong-Tie
• Hole Diameter: 3/4 in.
• Material: Plastic
• Packaging: Packs of 10 and Cartons of 100

Approved Applications

• Threaded rod and rebar dowel installations in drilled concrete holes
• Overhead adhesive dispensing installations
• Upwardly inclined adhesive dispensing installations
• Horizontal adhesive dispensing installations
• Deep embedment installations in concrete
• Submerged (underwater) concrete conditions
• Glued-in-rod (GIR) installations in timber when paired with Timber - SET structural epoxy anchoring adhesive

Frequently Asked Questions

What is the purpose of the Simpson PP75-RP10 Adhesive Piston Plug?

The PP75-RP10 Adhesive Piston Plug works in conjunction with the Simpson Strong-Tie Piston Plug Delivery System to dispense adhesive into drilled holes for threaded rod and rebar dowel installations. Its matched tolerance design virtually eliminates the formation of voids and air pockets during adhesive dispensing, ensuring consistent and reliable adhesive placement.

What drilled hole diameter does this piston plug fit?

This piston plug is sized to fit a 3/4 in. drilled hole diameter.

Can this piston plug be used with all Simpson Strong-Tie anchoring adhesives?

Yes, the PP75-RP10 works with any Simpson Strong-Tie anchoring adhesive. It can also be used specifically for glued-in-rod (GIR) installations in timber when paired with Timber - SET structural epoxy anchoring adhesive.

Is this piston plug suitable for challenging installation orientations?

Yes, the Simpson Strong-Tie Piston Plug Delivery System is designed for use in a variety of installation orientations and embedment depths, including overhead, upwardly inclined, horizontal, deep embedment, and submerged (underwater) concrete conditions. The barbed end also provides a reliable connection to flexible extension tubing to assist in these applications.

Note: Product dimensions may differ from picture. Please see the item description above for specifications.