Upchurch Scientific”s polymer fingertight fitting is capable of withstanding temperatures up to 200 C/392 F. Made of polyketone (PK), the fitting exhibits biocompatibility comparable to PEEK. The fitting is rated to 6,000 PSI (414 bar) at 200 C and to 12,000 PSI (827 bar) at ambient temperatures, making it a good fit for applications where a metal fitting is unsuitable, such as protein analysis and ion chromatography.