Perma-Type Rubber - Plainville, CT (Serving Metro New York)
Manufacturer, Custom Manufacturer
Custom manufacturer of inflatable pipe plugs & bags for oil, gas or water pipelines in standard & custom sizes. Available in dimensions from 2 in. to 60 in. dia. Materials include nitrile (Buna-N), pure gum & other type of rubber. Also available with polyester & flame retardant cloth covers. Accessories available include extension kits for used in applications wherever standard 3 ft. L of plug tubing must be extended. Tubing is suitable for oil, gas or water environments & for indoor/outdoor use.
www.permatyperubber.com/ostomy.html

Safety Main Stopper Co., Inc. - Brooklyn, NY
Manufacturer, Custom Manufacturer, Service Company
Gas main bags, expansion & pneumatic test plugs & pipe line stoppers for gas, oil or water mains. From 1/2 in. to 72 in. diameter.

Goodman Main Stopper Mfg. Co. Inc. - Brooklyn, NY
Manufacturer
Manufacturer of pneumatic & mechanically actuated low pressure pipeline stopping equipment & other related products.