Premium Piano Spare Parts - High-Quality Wool Felt Hammer Joint Springs

Crafted from 100% pure wool felt for superior durability and sound absorption, these precision-engineered hammer butt springs ensure smooth key action and consistent performance. The dense wool ring design minimizes friction while maintaining optimal tension regulation.

Ideal for professional piano technicians and restoration specialists, these small wool rings serve as essential replacements for worn hammer joints in grand/upright pianos. The tightly woven felt resists compression even under heavy use, prolonging service life.

Our industrial-grade manufacturing process guarantees uniform thickness (2.5mm ±0.1mm tolerance) and pre-cut sizing for direct drop-in installation. Each piece undergoes vibration testing to meet concert-level acoustical standards.

Buy wholesale at unmatched global pricing - bulk orders available for music schools, repair workshops, and piano manufacturers. Ships factory-direct with quality certification.