Cast-A-Seal 402/402F

PIPE DIAMETERS: 1-1/4" - 6" (32-150 mm) PVC

Cast-A-Seal 402 meets or exceeds:
  • ASTM C1227 Standard Specification for Precast Concrete Septic Tanks
  • ASTM C1644 Standard Specification for Resilient Connectors Between Reinforced Concrete On-Site Wastewater Tanks and Pipes
  • ASTM C923 Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals
  • ASTM C1244 Standard Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test
  • ASTM C1478 Standard Specification for Storm Drain Resilient Connectors Between Reinforced Concrete Storm Sewer Structures, Pipes and Laterals
  • IAPMO Z1000
  • IAPMO Z1001
  • NPCA Best Practices
  • NOWRA Model Code

Category:
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CAST-A-SEAL 402/402F is a watertight flexible connector that is cast into the structure when the concrete is poured. The connector is folded into the casting position and placed on the reusable heavy-duty solid plastic mandrel that is installed directly to the form. After the concrete is cured, the form is opened, removing the mandrel from the gasket, but leaving the CAST-A-SEAL 402/402F connector embedded in the concrete.

The gasket is then simply unfolded at the job site and is tightened around the pipe using the supplied stainless steel take-up clamp.

Features and Benefits

  • Simple cast-in design provides flexible watertight connection
  • Improves on-site system performance and minimizes maintenance
  • Protects groundwater from unintended discharges
  • Eliminates infiltration and exfiltration
TYPICAL TEST RESULTS for CAST-A-SEAL 402/402F (as in ASTM C 1644, C 923 and C 1478)
TestASTM Test MethodTest RequirementsTypical Result
CHEMICAL RESISTANCE;
1N SULFURIC
ACID and 1N
HYDROCHLORIC ACID
D 534, AT 22ºC FOR
48 HRS
NO WEIGHT LOSS
NO WEIGHT LOSS
NO WEIGHT
LOSS
NO WEIGHT
LOSS
TENSILE STRENGTHD 412 1200 PSI, MIN.2100 PSI
ELONGATION AT BREAKD 412 350%, MIN525%
HARDNESSD 2240 (SHORE A
DUROMETER)
±5 FROM THE
MANUFACTURER’S
SPECIFIED HARDNESS
<2
ACCELERATED
OVEN-AGING
D 573, 70± 1ºC
FOR 7 DAYS
DECREASE OF 15%,
MAX. OF ORIGINAL
TENSILE STRENGTH, DECREASE
OF 20%, MAX.
OF ELONGATION
-13% TENSILE
CHANGE, -14%
ELONGATION
CHANGE
COMPRESSION TESTD 395, METHOD B,
AT 70ºC FOR 22 HRS
DECREASE OF 25%,
MAX. OF ORIGINAL DEFLECTION
13%
WATER ABSORPTIOND 471 IMMERSE 0.75
BY 2-IN.SPECIMEN
IN DISTILLED WATER
AT 70ºC FOR 48 hrs
INCREASE OF 10%,
MAX. OR ORIGINAL BY
WEIGHT
3.50%
OZONE RESISTANCED 1171RATING 0PASS
LOW-TEMP,
BRITTLE POINT
D 746NO FRACTURE AT -40ºCPASS
TEAR RESISTANCED 624, METHOD B200 LBF/IN. (MIN.)450 LBF/I
Download Specifications

 

A flexible pipe-to-structure connector shall be employed in the connection of the sanitary sewer pipe to precast structures. The connector shall be CAST-A SEAL® 402/402F as manufactured by Press-Seal Corporation, Fort Wayne, Indiana, or approved equal. The connector shall be the sole element relied on to assure a flexible, watertight seal of the pipe to the precast structure. The connector shall consist of a rubber gasket and an external take-up clamp.

The rubber gasket element shall be constructed solely of synthetic or natural rubber, and shall meet or exceed the physical property requirements of ASTM C 923.

The external take-up clamp shall be constructed of Series 300 non-magnetic stainless steel and shall utilize no welds in its construction. The clamp shall be installed by torquing the adjusting screw using a torque-setting wrench available from the connector manufacturer.

Selection of the proper size connector for the structure and pipe requirement, and installation thereof, shall be in strict conformance with the recommendations of the connector manufacturer. Any dead end pipe stubs installed in connectors shall be restrained from movement per ASTM C 923.

The finished connection shall provide sealing to 13 psi (minimum) and shall accommodate deflection of the pipe to 7 degrees (minimum) without loss of seal.

Vacuum testing shall be conducted in strict conformance with ASTM C 1244 prior to backfill. Other testing shall be conducted in strict conformance with the requirements of the connector manufacturer.

  1. Attach mandrel to outside form wall.
  2. Invert gasket into casting position.
  3. Place gasket and mandrel in form and pour.
  4. Strip form and mandrel, leaving gasket in place.
  5. Invert gasket to outside of tank, insert pipe and tighten take-up clamp.
CAST-A-SEAL 402PIPE SIZEPIPE O.D. RANGEWALL THICKNESSAPPLICATION
452.02501.25" - 2" (31 - 51mm)1.5" - 2.7 (38 - 70mm)2.5" - 6" (64 - 150mm)STANDARD
452.04504" (100mm)4.2" - 4.7" (107 - 119mm)2.5" - 6" (64 - 150mm)STANDARD
452.0402F14" (100mm)4.2" - 4.7" (107 - 119mm)2.5" - 4.0" (64 - 102mm)Closed Face
452.06506" (150mm)6.2" - 6.7" (157 - 170mm)2.5" - 6" (64 - 150mm)STANDARD
CAS ADAPTER3" (75mm)3.2" - 3.6" (81-91mm)---Use with 4" CAST-A-SEAL