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Raritan Engineering ESTRK Electroscan Repair Kit for EST Marine Waste Treatment Systems

Manufacturer

Raritan Engineering

<h3>Raritan Engineering: Over Six Decades of Marine Sanitation Excellence</h3><p><strong>Raritan Engineering Company, Inc.</strong> has been setting the standard for marine sanitation and plumbing since 1958. Founded on the patent for the original PH Marine Toilet — a manual head built for the U.S. Navy — the company has grown from a single-product innovator into one of the most trusted names on the water. Today, this family-owned, American-made manufacturer continues to produce a comprehensive lineup of marine sanitation and comfort systems from its facility in Millville, New Jersey.</p><p>What separates Raritan from the competition is a relentless focus on real-world reliability, environmental responsibility, and U.S.-built quality. The company's committed workforce averages more than two decades of tenure, and Raritan is known for turning orders around the same day they are received. Critically for boaters, the company stocks repair kits and replacement parts for virtually every product it has ever made — and backs each product with free technical phone support for the life of the product, with an average hold time of under one minute.</p><h3>A Legacy of Firsts in Marine Sanitation</h3><p>Raritan's history reads like a timeline of marine sanitation milestones. The Crown Head — introduced in 1966 — was the world's first macerating marine toilet, a design breakthrough that redefined onboard waste management. In 1974, Raritan pioneered the first small onboard waste treatment system, a concept that was later refined into the ElectroScan, a Type I Marine Sanitation Device that became the benchmark against which all others were measured. These innovations underscore why Raritan is a go-to brand for serious boaters who need dependable systems offshore and in environmentally sensitive No Discharge Zones.</p><p>Raritan's <a href="/7517-raritan-engineering-toilets-manual-electric-fixed-mount-parts-201081">marine toilets — both manual and electric</a> — span a wide range of models, from the legendary PHII to the premium Marine Elegance series, which features a one-piece china bowl, low water consumption, and a SeaFresh option allowing boaters to switch between freshwater and seawater flushing. These units are compact by design, engineered to fit the sloped hulls and tight quarters common on sailboats and powerboats alike.</p><p>Responsible waste management is central to the Raritan ethos. Their <a href="/7517-raritan-engineering-holding-tanks-waste-treatment-systems-200531">holding tanks and waste treatment systems</a> — including the Purasan EX and Type I/II Marine Sanitation Devices — are engineered to comply with the Clean Water Act while minimizing the vessel's environmental footprint. For boaters managing tank chemistry, Raritan's <a href="/7517-raritan-engineering-rv-water-holding-tank-treatment-18300">RV and marine holding tank treatments</a> are formulated to break down waste effectively and control odors in a way that is safe for the marine environment.</p><p>Comfort aboard a vessel goes beyond sanitation. Raritan's <a href="/7517-raritan-engineering-water-heaters-201162">marine water heaters</a>, including the 1700 Series, are built with glass-lined steel tanks for durability and feature a heat exchanger that allows the unit to tap engine heat for efficient hot water production while underway — a genuinely clever dual-mode design. And for vessels where fresh provisions matter, Raritan's <a href="/7517-raritan-engineering-refrigerators-200857">marine refrigerators and ice makers</a>, such as the Icerette, bring the same build quality and long-term parts support that boaters expect from the Raritan name.</p><h3>Why Boaters Trust Raritan Engineering</h3><ul style="list-style:disc"><li>American-made products assembled in Millville, New Jersey since 1958</li><li>Family-owned with an employee base averaging over 22 years of experience</li><li>Free lifetime technical phone support for all Raritan products</li><li>Same-day or next-day order fulfillment for most products and parts</li><li>Environmentally responsible designs built to meet EPA and Clean Water Act standards</li><li>Comprehensive parts availability for current and legacy products</li></ul>

Part Number

ESTRK
09/12/2036 7:45 AM
Sale Price

$97.18

3 left at this price

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Usually delivered within 2 days

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No Hassle Returns

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Fitment guaranteed

Fitment guaranteed

Product Details

The Raritan Engineering ESTRK Electroscan Repair Kit is a comprehensive maintenance and rebuild kit designed to keep your Raritan Electroscan (EST) and earlier Lectra/San marine waste treatment systems operating at peak performance. This kit includes all the critical seals, gaskets, hardware, and wear components needed to restore proper function to the system's macerator, mixer, and motor assemblies.

The Raritan Electroscan is a USCG-certified Type I Marine Sanitation Device (MSD) that uses electrically charged saltwater to generate hypochlorous acid, eliminating harmful bacteria and viruses without the use of added chemicals. Keeping the seals and internal components in top condition is essential for maintaining effective waste treatment and preventing leaks.

Kit Includes:

  • (2) Motor Shaft Seal — Part No. 31-102
  • (1) Macerator Seal Washer — Part No. 31-102-1
  • (1) Macerator Retaining Ring — Part No. 31-102-2
  • (1) Mixer Seal Washer — Part No. 31-102-3
  • (1) Mixer Retaining Ring — Part No. 31-102-4
  • (2) Motor Shaft Bushing — Part No. 31-103
  • (1) O-Ring — Part No. 31-105
  • (4) 10-32 x 7/8" Round Head Machine Screw, Stainless Steel — Part No. 31-106
  • (1) Cover Gasket — Part No. 31-112
  • (4) Terminal Block Bolt — Part No. 31-113-2
  • (4) Cover Hold Down Nut, 10-32 — Part No. 31-114

This OEM repair kit is the correct solution for routine maintenance or servicing of the Raritan Electroscan EST waste treatment system, ensuring continued reliable and legally compliant marine sanitation.

Products specifications

Type

Replacement Kits

first order so far so good

Thank you for all the help by telephone, it was invaluable!

Lowest Price for what I was looking for. Free shipping ALWAYS helps

Nice easy to find the parts I need

Easy...great web site!

Delivered as advertised...

good

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