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Wale multi rubber stoppers are manufactured of either silicone or neoprene rubber. The rings are individually cut from the rubber stopper, with each ring fitting perfectly inside the next. This allows for vacuum tight fit for all openings within rubber bottle stopper size range. Ideally suited for glassblowing operations and chemistry labs.
Multi rubber stoppers made of red silicone rubber are suitable for higher temperature applications with a serviceable temperature range from -100° F to +450° F. These rubber stoppers are resistant to hot oils, fuels, oxidizing chemicals, sodium hydroxide and ozone. Multi stoppers made of green neoprene are resistant to oils, solvents, ozone's and many hydrocarbons. The serviceable temperature range is from -40° F to +212° F
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