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Key Benefits
 Prevents excess Inflow/Infiltration from entering your sanitary sewer system.
Eliminates pavement settlement around manhole covers, and catch-basins.
Increases system capacity to allow for new development on existing sewer system.
Rubber Sleeve
 The nominal 6 or 9 inch wide sleeve is made of rubber which conforms to the requirements of ASTM C-923, as modified, with a minimum 3/16 inch thickness for durability and resistance to puncturing or tearing. The corrugated shape allows for movement within the confines of the surrounding backfill and also provides for a full 2 inches of vertical movement without stretching the material. The sleeve is shaped to allow it to be mechanically locked to the manhole frame.
Top Compression Band
This one piece uneven-legged channeled compression band is 1-1/4 inches wide and fabricated from high quality, corrosion resistant, 16 gauge stainless steel conforming to ASTM A-240 type 304. The band compresses the rubber sleeve against the edge of the manhole frame base flange while extending both over and under this flange to lock the sleeve in place and provide a positive watertight seal. 
The 10 inch long slot and multiple stud holes in the band provides for more than 4 diameter inches of usable range. Once tightened by means of the External Tightening Tool, the band is easily locked in place by the tightening of 2 self locking stainless steel studs.
Bottom Compression Band
This flat 1 inch wide compression band, is fabricated from the same 16 gauge stainless steel, has an 8 inch diameter range and uses the same tightening tool as the top band.
Rubber Extensions
The External 8 inch wide rubber extension is made from the same material and has the same thickness as the chimney seal itself. The top portion has a band recess and is shaped to fit into the bottom band recess of the sleeve. The bottom portion is shaped to receive a second bottom band.
Physical Properties
Tensile Strength: 1500 psi
Elongation at break: 350% min.
Hardness(Durometer): 48 +- 5
Accelerated oven-aging: max 15% decrease of tensile, 20% of elongation
Chemical resistance: no weight loss in 1N of sulfuric or hydrochloric acid
Compression set: 18% max. decrease
Water absorption: max. 10% increase by weight
Ozone resistance: rating 0
Low temperature brittle point: No fracture at -40 degrees C
Tear resistance: 200 lb. f/in.
Splice strength: 180 degree bend with no visible separation
Installation Instructions
Product Specifications
External Tech-Data Sheet
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Cretex Company