Eppendorf SEPTA(SP) ASSY B 5720850559

This item is a septum assembly (SEPTA(SP) ASSY B) used with Eppendorf bioprocess equipment to seal head‑plate ports and permit aseptic access. The assembly typically combines a stainless‑steel holder (blind‑plug style) with a silicone septum that allows additions, inoculation or syringe/needle sampling without opening the port. Eppendorf product documentation for blind plugs and septa describes stainless‑steel holders and silicone (including PTFE‑coated) septa for ported head plates, including Pg 13.5 septa dimensions (O.D. 18 mm / I.D. 12 mm). I was not able to locate a manufacturer product page explicitly listing part number 5720850559, so the points below reflect Eppendorf’s published septa/holder product descriptions rather than a single labeled part sheet for that exact number.

Key Features:

• Assembly type: septum assembly comprising stainless‑steel holder and silicone septum (PTFE‑coated option available)
• Septum material: silicone rubber (PTFE‑coated variant documented by manufacturer)
• Port compatibility/dimensions: manufacturer lists Pg 13.5 septa with O.D. 18 mm / I.D. 12 mm (septum holder I.D. 12 mm)
• Primary function: enables syringe/needle addition, inoculation and sampling through a sealed port

Advantages:

• Provides a gas‑ and liquid‑tight seal for head‑plate ports to reduce contamination risk
• Allows sterile additions and repeatable syringe/needle sampling without disassembling the head plate
• Stainless‑steel holder and PTFE‑coated septum option increase chemical compatibility and durability