Press-Seal Cast-A-Seal cast-in pipe-to-manhole connector.
Press-Seal’s Cast-A-Seal (CAS) 402 is a simple cast-in pipe-to-manhole connector manufactured for PVC pipe diameters of 1.25 inches to six inches (31.75–152.4 mm). Its versatility lends itself to stormwater, wastewater, and septic tank structures with wall thicknesses of 2.5 inches to six inches (63.5–152.4 mm).
The gasket component meets or exceeds a wide variety of ASTMs, too, including:
- C923 (Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals)
- C1227 (Standard Specification for Precast Concrete Septic Tanks)
- C1644 (Standard Specification for Resilient Connectors Between Reinforced Concrete On-Site Wastewater Tanks and Pipes)
Additionally, the gasket comes in both close- and open-faced designs to help with future construction of collection system tanks. With precise manufacturing and unrivaled innovation, the Cast-A-Seal is an easily installed and ingeniously designed precast tool.
Equipment Needed for Installation
Because of the CAS 402’s simple design, a complex system of parts is not required for installation. To ensure you are adequately prepared, review this equally simple, two-step checklist:
- Ensure you have the correct CAS size for the pipe coming into the structure.
- Ensure your CAS has its included mandrel, bolt, external take-up clamp, and rubber gasket. Press-Seal also provides a separately purchased torque wrench designed for take-up clamps and nothing more.
Installation Instructions
Once you obtain the necessary equipment, you’re ready for install!
- Fold the throated section of the gasket inward.
- Push the gasket flush onto the mandrel, ensuring the throated section faces the flat section of the mandrel.
- Attach the mandrel to the exterior jacket of the manhole frame with the supplied nut and bolt.
- Once the structure is poured, tighten the take-up clamps with the T-Handle torque wrench, ensuring the gasket holds in place during curing.
- Once the structure has cured, remove the mandrel and check that the throat of the gasket protrudes outward from the manhole.
CAS 402 mandrel and folded gasket side view.
CAS 402 folded gasket installed flush against mandrel.
CAS 402 gasket properly protruding from cured manhole.
With proper maintenance and care, the mandrel can be reused for future CAS 402 installations.
Why Does the Connector Come in Close- & Open-Faced Designs?
Jobsites use open-faced connectors when a predetermined set of pipes coming into a tank or manhole exists. But it’s not uncommon for required additional pipes at later dates as new homes or other structures are built in the same area. In instances where future construction is possible, a precast producer manufactures structures with close-faced connectors for the flexibility to add those new pipes to existing structures. Contractors are still able to vacuum test the structure prior to inserting new pipes, too.
Cast the Seal with Cast-A-Seal
Not sure which Cast-A-Seal is right for your project? Want to order CAS 402 now? Reach out to us toll free at (800) 348-7325 or locally at (260) 436-0521.