Spherical joint cup size 13/5

Spherical joint socket KS 13/5 is a precision laboratory component engineered for flexible sealed connections in scientific glassware. Made from borosilicate glass 3.3, this Form A spherical joint socket is specified as KS 13/5 and has an overall length of 100 mm. The spherical design allows slight angular adjustment while preserving vacuum integrity, which is advantageous in dynamic or multi-axis apparatus. With a net weight of 0,008 kg it is supplied as a single piece suitable for distillation columns, vacuum lines, reaction setups and other modular systems. Manufactured by Rettberg and carrying the Rettberg® designation, the socket combines the chemical inertness and thermal-shock resistance of borosilicate 3.3 glass with accurate ground-joint geometry. It mates with matching KS 13/5 spherical balls, facilitating rapid assembly and disassembly of custom laboratory glassware where conventional conical joints would restrict movement. The component supports reliable performance across typical laboratory temperature ranges and solvent environments encountered in analytical and preparative chemistry.

Key features

• Pack size: 1 pc(s)
• Product type: Spherical joint socket
• Joint size: KS 13/5
• Material: Borosilicate glass 3.3
• Form: Form A
• Length: 100 mm
• Technical Information Sheet: