The Simpson Adhesive Piston Plug for 13/16 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, delivering consistent, reliable adhesive placement across demanding anchor installation scenarios.

Key Features

• Model number embossed on each plug - makes it easy to confirm you have the correct plug on the job site without guessing or cross-referencing packaging.
• Matched tolerance design - virtually eliminates voids and air pockets during adhesive dispensing, so adhesive fills the drilled hole completely and anchor strength is not compromised.
• Designed for multiple installation orientations and embedment depths - supports overhead, upwardly inclined, horizontal, deep embedment, and submerged (underwater) concrete applications, reducing the need for specialized tools in different scenarios.
• Compatible with any Simpson Strong-Tie concrete anchoring adhesive - works across the full Simpson Strong-Tie adhesive lineup, giving you flexibility to pair it with the adhesive already on hand for your project.
• Sized specifically for 13/16 in. drilled hole diameter - the precise fit ensures proper function within the Piston Plug Delivery System and consistent results every time the plug is used.
• Barbed end connection - provides a reliable, secure connection to the flexible extension tubing, reducing the risk of disconnection during adhesive dispensing.
• Plastic construction - lightweight and durable for repeated handling on the job site without adding unnecessary weight to tool setups.

Why This Product

• Built for the toughest anchor installation conditions - whether you are installing threaded rod or rebar dowels overhead, at an incline, or in submerged concrete, this piston plug is specifically engineered to deliver adhesive reliably in orientations where standard dispensing methods fall short.
• Virtually eliminates voids for stronger, more consistent anchors - the matched tolerance fit between the plug and the drilled hole keeps adhesive where it needs to be, reducing the risk of weak spots that can compromise anchor load capacity.
• Designed to integrate seamlessly with Simpson Strong-Tie adhesives - because it works with any Simpson Strong-Tie concrete anchoring adhesive, contractors can use this plug without being locked into a single adhesive product, making it a practical addition to any anchoring workflow.
• On-plug model identification reduces costly installation errors - with the model number embossed directly on each plug, crews can quickly verify they are using the right size before dispensing adhesive, helping prevent rework in the field.

Specifications

• Manufacturer Part Number (MPN): PP81-RP10
• Brand: Simpson Strong-Tie
• Hole Diameter: 13/16 in.
• Material: Plastic
• Packaging: Packs of 10 and Cartons of 100

Approved Applications

• Overhead adhesive anchor installations
• Upwardly inclined adhesive anchor installations
• Horizontal adhesive anchor installations
• Deep embedment anchor installations
• Submerged (underwater) concrete anchor installations
• Threaded rod dowel installations in drilled concrete holes
• Rebar dowel installations in drilled concrete holes

Frequently Asked Questions

What is the purpose of the Simpson Strong-Tie Piston Plug Delivery System?

The Piston Plug Delivery System is designed for dispensing adhesive into drilled holes for threaded rod and rebar dowel installations. It is engineered to work in overhead, upwardly inclined, and horizontal orientations, as well as deep embedments and submerged (underwater) concrete conditions.

How does the piston plug help prevent voids and air pockets?

The matched tolerance design between the piston plug and the drilled hole virtually eliminates the formation of voids and air pockets during adhesive dispensing, ensuring consistent and complete adhesive placement within the hole.

What drilled hole size is the PP81-RP10 designed to fit?

The PP81-RP10 adhesive piston plug is sized specifically to fit a 13/16 in. drilled hole diameter.

Which Simpson Strong-Tie adhesives are compatible with this piston plug?

The PP81-RP10 piston plug works with any Simpson Strong-Tie concrete anchoring adhesive, making it a versatile component within the Simpson Strong-Tie anchoring system.

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