Simpson Adhesive Piston Plugs 1-1/8 inch are precision-fit plastic plugs designed to work as part of the Simpson Strong-Tie Piston Plug Delivery System, a purpose-built solution for dispensing anchoring adhesive into drilled holes. 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 bond quality across the full embedment depth. These plugs are engineered for demanding installation scenarios including overhead, upwardly inclined, and horizontal orientations, deep embedment conditions, and submerged (underwater) concrete applications - and the PP112 size also supports glued-in-rod (GIR) installations in timber when paired with Timber-SET structural epoxy anchoring adhesive.

Key Features

• Model number embossed on each plug - makes it easy to confirm you have the correct plug size on the job site, reducing the chance of installation errors.
• Matched tolerance fit for 1 1/8 in. drilled holes - the close-tolerance design virtually eliminates voids and air pockets during dispensing, so adhesive is placed consistently along the full embedment depth.
• Barbed end connection - provides a reliable, secure attachment to flexible extension tubing, helping maintain a controlled dispensing path during installation.
• Compatible with any Simpson Strong-Tie anchoring adhesive - gives contractors flexibility to use the adhesive product suited to their specific project requirements without needing a different plug.
• Supports a wide range of installation orientations and embedment depths - including overhead, upwardly inclined, horizontal, deep embedment, and submerged concrete conditions, reducing the need for multiple specialized tools or methods.
• Approved for glued-in-rod (GIR) timber installations when paired with Timber-SET structural epoxy anchoring adhesive - expands the utility of this plug size beyond concrete applications, making it a versatile choice for structural timber connections as well.
• Consistent adhesive distribution along the embedment depth - supports bond quality for high-strength GIR connections, helping installers achieve dependable structural results.

Why This Product

• Engineered to minimize installation voids - the matched tolerance design between the plug and the drilled hole virtually eliminates air pockets during adhesive dispensing, directly supporting the bond integrity that anchoring applications demand.
• Versatile across challenging installation conditions - approved for overhead, upwardly inclined, horizontal, deep embedment, and submerged (underwater) concrete applications, this plug handles the orientations and environments where adhesive placement is most difficult to control.
• Dual-application capability in concrete and timber - beyond standard concrete anchoring, the PP112 plug size is suitable for glued-in-rod installations in timber with Timber-SET structural epoxy anchoring adhesive, offering broader value across project types.
• Easy field identification reduces costly mix-ups - with the model number embossed directly on each plug, workers can quickly verify they have the correct size for the hole diameter at hand, keeping installations on track.

Specifications

• MPN: PP112-RP10
• Brand: Simpson Strong-Tie
• Hole Diameter: 1-1/8 in.
• Material: Plastic
• Packaging: Packs of 10 and Cartons of 100

Approved Applications

• Threaded rod and rebar dowel installations in drilled holes
• Overhead adhesive installations
• Upwardly inclined adhesive installations
• Horizontal adhesive installations
• Deep embedment conditions
• 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 PP112-RP10 Adhesive Piston Plug?

The 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 adhesive placement along the full embedment depth.

What drilled hole diameter is this piston plug sized for?

The PP112-RP10 is sized to fit a 1-1/8 in. drilled hole diameter, and is compatible with the matched-tolerance Piston Plug Delivery System components designed for that hole size.

Can this piston plug be used with any Simpson Strong-Tie adhesive?

Yes. The PP112-RP10 works with any Simpson Strong-Tie anchoring adhesive. Additionally, this piston plug size can be used for glued-in-rod (GIR) installations in timber when paired with Timber - SET structural epoxy anchoring adhesive.

Is the PP112-RP10 suitable for challenging installation orientations such as overhead or underwater applications?

Yes. The Piston Plug Delivery System is specifically designed for dispensing adhesive in overhead, upwardly inclined, and horizontal orientations, as well as deep embedments and submerged (underwater) concrete conditions. The matched tolerance between the plug and hole helps maintain adhesive placement integrity across all of these challenging scenarios.

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