Perma-Type Rubber - Plainville, CT (Serving Western Pennsylvania)
Manufacturer, Custom Manufacturer
Manufacturer of rubber expansion plugs for oil, gas & water pipelines, ductwork & floor drains and Foreign Material Exclusion (FME). Plugs are manufactured from natural & nitrile (Buna-N) rubber & range from 2 in. to 60 in. in diameter. Drain & pipe plugs are water & chemical resistant; duct plugs feature protective polyester cloth cover. Custom sizes and shapes available for all plugs.
www.permatyperubber.com/inflatable-pipe-plu...

Hennigan Engineering Co., Inc.(Serving Western Pennsylvania)
Service Company
Cleaning service of heat exchangers, condensers, piping, tanks, boilers, 10,000-40,000 PSI water jet surface preparation, concrete hyrdodemolition, coating & paint application & industrial cleaning. Additional services including inspection, maintenance, marine, chemical cleaning, decontamination, coating, non-destructive (NDT) testing, pipe & tube cleaning, leak detection, paint removal & stripping & water treatment services.
www.henniganengineering.com/plugs.htm

Conco Systems, Inc. - Verona, PA
Manufacturer, Custom Manufacturer, Service Company
Manufacturer of expansion plugs for plugging 5/8 in. to 1 1/4 in. condenser & heat exchanger tubes. Expansion plugs are available in 240 psi to 500 psi pressure range with chloroprene cylinders & metal components in titanium, stainless steel, brass & bronze.

Safety Corp. of America - Pittsburgh, PA
Distributor
Sewer by-pass & testing; Distributor