GL45 cap, female syringe luer slip, syringe filter connector for Duran connection system Possible applications included the transfer of sterile media from one container to another using a perstaltic pump. Cap has swiveling, dual propylene hose connectors for use with soft elastic tubing that has an ID of 6-9 mm. The caps center rotates freely, allowing the bottle cap to be unscrewed without the need to disconnect the tubing. Polypropylene cap is temperature resistant to 140C.