SI TECH Anti-Friction Washer for Drysuit Inflation and Exhaust Valves

SI TECH Anti-Friction Washer: drysuit valve maintenance component

SI TECH AB, a Swedish manufacturer specialising in drysuit components, has been designing and producing valves and accessories for diving for several decades. This anti-friction washer is a genuine replacement part, the product of that drysuit component expertise.

Design and compatibility

The washer has an outer diameter of 64 mm, sized to sit correctly between the valve and the suit during installation or replacement of an inflation or exhaust valve. Its purpose is to reduce mechanical friction at the valve-to-suit interface, protecting the suit material from premature wear during tightening and repeated handling. SI TECH specifies compatibility with all of its inflation and exhaust valves, making this a versatile stock item for technicians and divers who service multiple SI TECH valve models across a fleet of drysuits.

Applications

This washer is relevant for self-sufficient divers who carry out their own drysuit maintenance, for dive instructors managing a fleet of suits at a training centre, and for service technicians specialising in cold-water diving equipment. Typical use cases include replacing a worn inflation or exhaust valve, carrying out a full suit overhaul, or fitting a new valve to an existing suit. Universal compatibility across the SI TECH valve range simplifies spare-parts inventory management for professional operations.

Key features

• Universal SI TECH valve compatibility: fits all inflation and exhaust valves in the SI TECH range, streamlining spare-parts management in the workshop.
• Suit material protection: reduces friction stress at the valve-to-suit interface during tightening, limiting long-term wear on the sealing material.
• Genuine manufacturer part: designed and produced by SI TECH AB, the Swedish specialist in drysuit components, ensuring dimensional conformity with original valves.
• 64 mm outer diameter: precise sizing for correct positioning and even load distribution around the valve perimeter during installation.

Maintenance and replacement

Whenever work is carried out on a drysuit valve — whether replacing the valve itself or performing a scheduled service — the anti-friction washer should be inspected and replaced if any signs of compression set, deformation, or cracking are visible. A degraded washer can compromise the seal at the valve-to-suit interface and accelerate wear of the surrounding material. SI TECH engineers its maintenance components to meet the demands of cold-water diving.

For guidance on diving equipment care and maintenance, see the Proteushop guide to non-PPE diving equipment and maintenance. For official SI TECH technical documentation, visit the SI TECH product page on the manufacturer's official website.