OEM Bottle Cap for MerMade DNA and RNA Synthesizer instruments. Manufactured by Beckman-Coulter Instruments (Part # 607-054 or 607054).  Discontinued.

28-400 Thread that fits Boston Round Bottles up to 8 ounces (450 mL).

For reagents and amidite positions. 

Compatible with MerMade 4, MerMade 6, MerMade 12, MerMade48x, MerMade 192, MerMade192x and MerMade 384.

Comes with OEM Teflon Encapsulated Viton O-Ring.