Industry leading quality, consistency, and durability
Mechanical bonding of premium natural rubber and end plates eliminates failures from chemical bonding
Improved performance and safety through optimized design
Superior back pressure
Premium performance and aesthetics
Lightweight, short, and flexible
Cherne’s I-Series Muni-Ball plugs were designed to meet the needs of both the US and International markets in terms of size and expansion range. Our I-Series plugs have full body cording for added durability.
I-Series plugs feature:
Superior expansion range
Small deflated diameters
All plugs up through our 24–60″ size easily fit through a 24″ manhole frame
48–72″ and 54–96″ plugs fit through 36″ openings
Flexible bypass hoses – plugs can be bent to 90 degrees
Plugs 15-32″ and larger:
Aluminum end plates – minimizes rust/ corrosion
3/4″ eyebolts on plugs 15–32″ and larger – better holding strength
Patented field replaceable rupture discs or pressure relief valves on plugs 15–32″ and larger – protects plug from over-inflation
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