Shiva Scientific Glass Pvt Ltd manufactures Polytetrafluoroethylene `O`Ring with Locking Collar. Shiva Scientific Glass Pvt Ltd is an ISO 9001:2000 certified company. The Company also manufactures and exports various types of Glass Equipments, Borosilicate Glass Process Equipment and Laboratory Glassware. The Polytetrafluoroethylene `O`Ring with Locking Collar is specially made to use as gaskets in glass fittings. The Polytetrafluoroethylene `O`Ring with Locking Collar is provided with a collar which helps to locate it on the glass end correctly.