PYREX White Polypropylene GPI 38-400 Screw Cap with PTFE Liner

The PYREX 1261-CO White Polypropylene GPI 38-400 Screw Cap with PTFE Liner is a replacement laboratory closure designed for compatible PYREX threaded laboratory glassware, particularly the PYREX 1261-200 Heavy Wall Centrifuge Bottle. The cap uses the standardized GPI 38-400 thread finish. In this designation, “38” refers approximately to the thread diameter in millimetres, while “400” identifies the specific thread/closure style. Its PTFE liner provides the sealing interface required for compatible laboratory applications. When used with the 1261-200 centrifuge bottle, Corning states that the tight-fitting polypropylene screw-cap system helps reduce the possibility of aerosol escape. Key Features Genuine PYREX / Corning laboratory accessory Exact catalog number 1261-CO White polypropylene construction GPI 38-400 thread finish PTFE liner Screw-cap design Reusable laboratory closure Replacement cap for compatible PYREX laboratory glassware Compatible with PYREX 1261-200 Heavy Wall Centrifuge Bottle Designed to provide a secure closure when correctly fitted 1 cap per pack 1 cap per case Specification Details Brand PYREX Manufacturer Corning Catalog Number / MPN 1261-CO Product Type Screw Cap Material Polypropylene Color White Thread Standard GPI Thread Finish 38-400 Liner Material PTFE Reusable Yes Compatible Bottle PYREX 1261-200 Quantity per Pack 1 Quantity per Case 1