Besson Valve Gasket SP605140 – Spring Damper Bottom Cap for Tuba Valves 1–4 (29mm)

The Besson SP605140 spring damper is a genuine replacement bottom cap gasket designed for use on all four valves of select Besson tubas. With a diameter of approximately 29mm, it fits snugly into the valve bottom caps to provide reliable cushioning, reduce mechanical noise, and maintain smooth valve action.

Key Features:

• Official Besson part (SP605140 / STD720B-06)

• For valve positions 1, 2, 3, and 4

• 29mm diameter for accurate fit

• Reduces metal-on-metal contact and operational noise

• Compatible with a range of Besson tuba models

• Sold individually

Why Choose This Part:
Over time, valve dampers can wear down, leading to noise and reduced efficiency in your instrument’s action. The SP605140 spring damper offers a simple yet essential upgrade or replacement to keep your tuba in optimal playing condition. Ideal for players and repairers seeking original Besson components for professional-level maintenance.

Compatible Models:

• Tuba:

  • 980 / 981 / 982 / 983 / 984 / 993 / 994 (4 required per instrument)

Specifications:

• Part Number: SP605140

• Old Code: STD720B-06

• Type: Valve Spring Damper (Bottom Cap)

• Placement: 1st, 2nd, 3rd, and 4th valves

• Diameter: Approx. 29mm

• Sold: Individually