The Internal/External Adaptor Seal (I/E.A. Seal) is a sanitary manhole seal which prevents infiltration into the sewer system. The I/E.A. Seal stops inflow between the manhole frame and the top adjusting ring, it also seals the manhole chimney from the frame to the corbel.

 

The design of the I/E.A. Seal produces a rubber gasket seal, which seals the manhole frame and allows it to move with the road surface due to frost movement and thermal expansion. It also produces a stress barrier between the frame and the manhole chimney from direct load bearing of the traffic.

 

This will help preserve the integrity of the manhole chimney.

All sanitary manholes shall be provided with an Internal/External Adaptor Seal with a rubber sleeve to seal the outside of the chimney from the manhole frame down to the corbel. The I/E.A. Seal shall be installed per Adaptor Inc. installation instructions.

Ordering Information Needed

Casting I.D. #example:   (Neenah 1550)

                                  (East Jordan 1022-Z2)

 

 

The I/E.A. Seal is being used on rehabilitation projects in Wisconsin and Illinois.

Sleeve Length Required:   

                                (10”  12”  14”  16”  18”)

O.D. of Adjusting Ring:   

                                (34”  35”  36”  37”  38”)

1.

2.

3.

MANHOLE FRAME

BUTYL RUBBER SEAL

6” RUBBER

CASTING SLEEVE

BUTYL RUBBER SEAL

RUBBER SLEEVE

STAINLESS STEEL

CLAMP & BAND

CONCRETE ADJUSTING RINGS

I.A.S. RING

RECYCLED RUBBER

DIRECT SEAL BETWEEN

FRAME & I.A.S. RING

1/2”

3/4”

Pat. #  6,044,590

Internal/External Adaptor Seal Specifications