KUS NIRO Spacer Flange Ring / Mounting Adapter for Installing S3 and S3H Sensors

KUS Spacer Flange Ring / Counter Ring, SAE 5-Hole with 1 1/4" BSP Female Thread – The Ingenious 2-in-1 Accessory for Tank Construction

Ensure maximum flexibility and absolute leak-tightness when installing your fuel tank sender! The original KUS spacer flange ring (counter ring) is a true problem-solver in modern boat building. It primarily serves as a sturdy backing plate for thin-walled plastic or aluminum tanks, ensuring that the clamping force of the screws is distributed absolutely evenly. This reliably prevents warping of the tank surface and protects against lingering fuel odors on board.

The absolute highlight: This solid stainless steel ring also features a precisely cut 1 1/4" BSP internal thread. This allows it to double as a mounting adapter, enabling threaded fuel level transmitters (such as the KUS S3 or the digital NMEA 2000 NS3H transmitter) to be screwed directly into a standardized SAE 5-hole mounting pattern without any additional components.

Advantages & Technical Highlights at a Glance:

• Ingenious 2-in-1 hybrid system: Combines a reinforcement ring for flange transducers (SAE 5-hole) and a screw-in adapter for threaded transducers (1 1/4" BSP) in a single component.
• Premium AISI 316 stainless steel (V4A): Entirely manufactured from high-strength, saltwater- and acid-resistant marine-grade stainless steel. Completely resistant to aggressive fuels such as gasoline and diesel, as well as sewage and chemicals.
• Constant contact pressure: Ensures perfectly uniform compression of the fuel tank gasket—the most important prerequisite for a permanently odor- and leak-free fuel tank system.
• Easy installation: Exactly matches the standardized, international SAE 5-hole pattern (54 mm bolt circle) and can be used flexibly as an outer shim or an inner lock nut.

🛠️ Accessory tip from Tenten-Boats:

Unlock the full potential of this adapter! Combine the flange ring directly with the precision KUS S3 screw-in sensors or the high-tech digital KUS NMEA 2000 NS3H holding tank sensor from our marine product line.

Technical Data (Specifications):