It is made of high quality, environmentally friendly, food grade organic silicone rubber, corrosion resistance, acid and alkali resistance, high temperature resistance of 300 degrees, low temperature resistance -40℃, UV resistance, aging resistance, long service life, high elasticity, high airtightness, wear resistance, cold resistance, corrosion protection, antistatic, insulation .
 
Environmental protection, non-toxic and odorless, comfortable hand feeling, easy to use.
 
Suitable for sealing various types of PVC pipe, steel pipe, test tube, various metal plate holes and wooden plate holes, etc. can be used as waterproof plugs, sealing plugs, and test tube plugs. , Rubber bulkhead, plug cover, cylinder plug head, threaded rubber plug, etc.
 
Size ： Ø13mm -Ø48.5mm

Material: Silicone (Flexible, Food Grade) 

Colour: Green Yellow Blue Gray Red
                            
The size of the option corresponds to the size of the part where the rubber stopper will be inserted into the hole. When choosing a rubber stopper, try to choose a size that is one size larger than the actual measured opening to achieve the sealing effect without falling off