Teacher 
Distributor
Manufactured according to sizes recommended by ASTM standards. Manufactured from long lasting neoprene rubber. Suitable for use with petroleum products, minerals, oils, fats as well as most inorganic acids and bases. Neoprene rubber is oil resistance and suitable for temperatures up to 250ºF/120ºC. One hole and two hole stoppers available in the following sizes. All stoppers are supplied in pack of 10.
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