EPDM Flat Gasket for Flange Adaptor d16-225mm

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The Georg Fischer EPDM flat gasket is an industrial-grade elastomeric sealing element engineered specifically for flanged connections in metric PVC-U piping systems. Designed for use with Georg Fischer (GF Piping Systems) serrated and flat-faced flange adaptors, this gasket delivers dependable, leak-free joint integrity across the outer diameter range of d16 mm to d225 mm (corresponding to nominal bore sizes from DN10 up to DN200). Manufactured from high-density ethylene propylene diene monomer (EPDM) vulcanisate with a nominal hardness of 65 to 70 Shore A, this flat sealing ring compensates for minor surface irregularities while preserving bolt pre-load tension under fluctuating operating pressures in process and utility installations.

The material formulation demonstrates broad chemical compatibility, providing high resistance to industrial wastewater, dilute non-oxidising acids, alkalis, saline solutions, and typical swimming pool water disinfectant regimes. With certifications for contact with potable water and foodstuff applications, the gasket prevents fluid contamination, leaching, or degradation during extended service. Its physical properties ensure operational resilience within a wide temperature envelope, retaining elasticity from minus 40 degrees Celsius up to the maximum 45 degrees Celsius continuous operating threshold of PVC-U flanged networks. The flat profile is precisely proportioned to fit standard metric backing flanges, including PP-Steel reinforced rings, full-plastic PP-V flanges, and solid PVC-U backing flanges, without encroaching into the pipeline bore.

As an authorised Georg Fischer distributor, BigWeld supplies genuine industrial piping components engineered to perform under rigorous operational criteria. Proper installation requires alignment of mating flange adaptors and systematic torque application using a calibrated torque wrench in crosswise tightening stages, preventing over-compression of the elastomer and protecting thermoplastic flange collars from excessive bending stress.