Sensus 143-16-115-00 Seal Washer

The Sensus 143-16-115-00 Seal Washer is a critical internal component engineered specifically for the Sensus 243 service regulator series. Designed to maintain the integrity of the orifice-to-body seal, this high-grade elastomer washer prevents gas leakage and ensures accurate lock-up pressure performance. Veterans in the field recognize this part as essential for maintaining the ANSI B109.4 standards during routine meter set maintenance. Its composition is optimized for chemical resistance against natural gas, propane, and butane, preventing degradation and set point drift over long-term operation. Utilizing a genuine 143-16-115-00 replacement seal ensures that the internal relief valve and diaphragm assembly function within original manufacturer tolerances. Whether you are performing a field teardown or a bench test, verifying the sealing surface and replacing this rubber seal washer is standard protocol to avoid over-pressure trips and ensure consistent BTU delivery across varied flow rates.

Technical Specifications & Benefits

• Model Compatibility: Engineered specifically for Sensus 243-8, 243-12, and 243-SR industrial regulators.
• Material Integrity: High-performance elastomer designed for hydrocarbon resistance and thermal stability.
• Precision Fit: 143-16-115-00 dimensions ensure a zero-clearance fit against the valve seat to eliminate bypass.
• Operating Reliability: Maintains seal compression through extreme ambient temperature fluctuations.

Common Installation Questions

What causes 243 regulator seal failure?
Seal degradation is typically attributed to particulate abrasion from the gas stream or extreme cycle fatigue. Replacing the 143-16-115-00 washer during routine inspection prevents unmetered gas loss and irregular outlet pressure.

Is this seal compatible with all 243 orifice sizes?
Yes, this seal washer is designed to interface with the standard Sensus 243 orifice range. Always inspect the seating edge for nicks before installing the new service regulator seal.

Does this part require special lubricants?
For gas regulator maintenance, use only oxygen-safe, non-petroleum based lubricants if specified, though most technicians install these Sensus gaskets dry to avoid debris accumulation on the sealing face.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.