General Pump 660024 PTFE Anti-Extrusion Ring 6.2x9mm - 3370

Stops Seal Blowouts in High-Pressure General Pump Systems

The General Pump 660024 Anti Extrusion Ring prevents seal extrusion in high-pressure General Pump plunger assemblies, keeping soft sealing elements from deforming into clearance gaps under extreme operating pressures. As a genuine General Pump component - also referenced under part number 90516500 - this rigid backup ring is engineered to support sealing elements during the intense pressure cycling that triplex plunger pumps endure every working hour.

This part is commonly found in commercial pressure washers, car wash series pumps, and industrial General Pump models where reliability and consistent sealing performance are non-negotiable. General Pump has operated since 1982, providing pumps for various industries and offering tailored solutions for specific needs - and the 660024 anti extrusion ring reflects that same commitment to precision and durability.

Why You'll Love the General Pump 660024 Anti Extrusion Ring

Every benefit below ties directly to keeping your pump running and your operation productive.

• Protects primary seals from extrusion – Anti-extrusion rings protect softer seals from deformation under pressure. The 660024 ring blocks microscopic clearance gaps between moving and stationary parts, preventing soft O-rings or high-pressure seals from being forced into those gaps during pressure spikes.

• Reduces unplanned downtime – Worn or missing anti-extrusion rings can lead to fluid leaks and seal wear. By preserving seal integrity, the 660024 ring means fewer emergency rebuilds, fewer leaks dripping across the shop floor, and less time pulling the pump head apart when you should be working.

• Helps maintain consistent operating pressure – Anti-extrusion rings are necessary to maintain pressure integrity in pumps. When the seal stack stays intact, the pump delivers steady pressure and flow without the pulsing or drop-off caused by compromised seals.

• Supports long-term pump durability – Anti-extrusion rings extend the lifespan of primary O-rings or seals, and by preventing seal damage the 660024 ring slows wear on plungers, heads, bushings, and other wetted components that suffer when fluid bypasses a failed seal.

• Simple, drop-in replacement – If the pump model calls for part 660024, the ring seats directly into the existing groove with no modification, no machining, and no special tooling.

What Makes the 660024 Anti Extrusion Ring Different

Most generic or improvised backup rings are made to approximate dimensions and uncontrolled hardness levels - they may be close in size but wrong in profile, too soft under real operating pressure, or incompatible with the seal stack geometry of your specific pump.

The General Pump 660024 is built differently:

• Engineered for specific General Pump seal stacks – The 660024 is dimensioned for the exact groove depth, width, and seal combination specified by General Pump engineering. It fits the crankcase and plunger-seal assemblies of designated models without shimming or trimming.

• Material and hardness chosen for high-pressure plunger duty – The anti-extrusion ring is made of Teflon material, selected to resist cold flow and extrusion at the working pressures common in General Pump triplex plunger pumps. Genuine OEM parts are engineered from durable materials for demanding conditions, and the 660024 reflects that standard.

• Reliable performance under pulsating loads – High-pressure environments require anti-extrusion rings to prevent seal failure. The 660024 is validated in real General Pump applications with rapid pressure cycling - car wash bays, fleet cleaning rigs, industrial wash-down systems - where pressure can swing thousands of PSI in fractions of a second.

• Backed by OEM specifications – Using the genuine 660024 helps maintain warranty compliance while keeping the pump close to its original performance spec.

How It Works

An anti-extrusion ring is a rigid or semi-rigid backup component placed next to a seal. Here is what happens inside your pump:

1. Seated behind the main seal The 660024 ring is installed directly behind or beside a softer seal - such as an O-ring or high-pressure lip seal - inside the pump's crankcase or plunger assembly. It sits in a dedicated groove within the seal stack.

2. Supports the seal under pressure When the pump pressurizes, the Teflon ring acts as a rigid wall. They block microscopic clearance gaps between moving and stationary parts, preventing the softer seal material from being forced into those gaps. This stops the deformation cycle before it starts.

3. Keeps the system leak-tight By preventing extrusion and tearing of the primary seal, the ring helps the pump maintain full working pressure without leaks or rapid seal wear. They help reduce leakage and contamination in pump systems, and the component is critical for maintaining reliable sealing over time in pumps.

Product Details

For technicians and maintenance planners who want clear, factual specs before ordering, here are the key details for the General Pump 660024 Anti Extrusion Ring.

• Material / Construction: The anti-extrusion ring is made of Teflon material, chosen for its resistance to cold flow, chemical compatibility with water and typical pressure-washing detergents, and stability under repeated pressure cycling.

• Dimensions / Profile: Sized to match the seal groove used in compatible General Pump heads at approximately 6.2 mm inner diameter × 9 mm outer diameter × 1.5 mm thick. 

• Pressure and temperature suitability: Designed for the operating pressure range of General Pump models that specify part 660024 - typically in the 3,000 to 4,350 PSI range - and suitable for fluid temperatures up to approximately 165 °F, which covers normal pressure-washing service conditions.

• Compatibility: The General Pump 660024 part is used in high-pressure reciprocating pumps. Common model families include TP Series 51, WM Series, and selected TX, TC, and EZ series triplex plunger pumps. The anti-extrusion ring is used in car wash series pumps as well as commercial and industrial cleaning systems.

• Position in the assembly: The ring sits in the high-pressure seal stack around the plunger, typically in the crankcase or crankcase-cover assembly, immediately behind or beside the primary sealing element.

• Included in the box: Orders include one individual General Pump 660024 Anti Extrusion Ring. Six anti-extrusion rings are needed for proper installation - technicians should confirm the exact quantity their specific pump head requires by consulting the OEM exploded diagram.

Who the 660024 Anti Extrusion Ring Is For

This part serves anyone who depends on General Pump equipment for daily high-pressure work:

• Commercial pressure washer owners and service shops – People maintaining General Pump–equipped pressure washers that run daily for cleaning fleets, buildings, or heavy equipment.

• Car wash operators and maintenance teams – Facilities using high-cycle General Pump plunger pumps in automatic or self-serve bays, where seal reliability directly affects uptime and customer throughput.

• Industrial and agricultural equipment managers – Operations relying on General Pump for wash-down, sanitation, or process support who want to keep downtime and leaks to a minimum.

• Technicians doing scheduled pump overhauls – Anyone performing full seal and head service who wants to replace worn or hardened anti extrusion rings with OEM-spec components during routine service.

If you want dependable pressure and fewer seal-related repairs, this part fits your needs.

Frequently Asked Questions

Below are the most common fitment, use, and installation questions about the General Pump 660024 Anti Extrusion Ring.

How do I know if my pump uses the 660024 Anti Extrusion Ring? Check the model tag on your pump, then download the official parts breakdown for that model from General Pump. If part number 660024 (or 90516500) appears in the seal or head-ring assembly list, your pump uses this ring.

When should I replace the anti extrusion ring? Anti-extrusion rings should be inspected during pump servicing and rebuilding. Look for flattening, cracking, deformation, or visible extrusion marks. Replace the ring whenever you replace high-pressure seals, even if it looks marginally intact - prevention is far cheaper than an unplanned failure.

Can I run the pump without this ring if the seal looks fine? Removing the ring compromises the seal stack design. Anti-extrusion rings prevent seal extrusion under intense operating pressures, and omitting them can quickly lead to extrusion, leaks, and premature seal failure - especially under the high pressures typical of General Pump triplex models.

Is installation complicated? For a technician familiar with General Pump service, it is a straightforward drop-in part installed as shown in the pump's exploded diagram. Correct orientation and cleanliness are important - any debris or misalignment in the seal groove can create the very extrusion gaps the ring is meant to prevent.

Will using a non-OEM backup ring affect performance? Off-size or off-spec rings may not fully support the seal or may bind in the groove, causing leaks or accelerated wear. The OEM 660024 is manufactured to match the original design in dimensions, material hardness, and profile.

Does the anti extrusion ring affect operating pressure or flow? It does not change rated pressure or flow directly. Instead, it protects the seal so the pump can reliably hold its designed pressure over time - which is the whole point of maintaining the seal stack as General Pump intended.

Ready to Protect Your General Pump Seals?

The General Pump 660024 Anti Extrusion Ring keeps high-pressure seals stable and leak-free under the demanding conditions that triplex plunger pumps face every day. It is a small, inexpensive component that prevents one of the most common and costly failure modes in high-pressure pump service.