SOMMER AERATION Fine bubble diffuser technology Made in Germany. Fine bubble Tube DiffuserHigh efficient fine bubble tube diffuser for wastewater aeration. Our tube diffuser are available with EPDM, Silicone, NBR and TPU membranes. SOMMER Tube Diffuser EPDM, Silicone, PUR & TPU Replacement MembranesReplacement aeration membranes according your individual needs. Various models and dimensions made from specially selected and proven rubber mixtures (EPDM, Silicon, NBR) for near all existing tube diffusers. SOMMER Replacement Membranes Spare PartsAll kind of spare parts for your aeration projects. Become an Aeration expert by yourselves. More Diffuser Spare Parts