Comet 1210.0046.00 Buna-N O-Ring 17.13x2.62mm - 3003

Reliable Sealing for Comet Pump Assemblies in One Simple Part

The Comet 1210.0046.00 is an OEM rubber O-ring engineered to deliver leak-free sealing across multiple Comet pump models. With precise dimensions of 2.62 mm (cross-section) x 17.13 mm (inner diameter) and constructed from black rubber / Nitrile-Buna N70 (variant dependent), this sealing component is critical for high-pressure pump systems where pressure integrity and fluid containment are non-negotiable.

Whether you're a service technician rebuilding a manifold, a facility engineer keeping sprayers operational, or an equipment owner tackling routine maintenance, this is the correct OEM-style O-ring - also cross-referenced as Barens Part #3003. Installing it restores factory-level sealing performance and eliminates downtime caused by leaks or pressure loss.

Why You'll Want the Comet 1210.0046.00 O Ring in Your Toolkit

A small, inexpensive part that prevents expensive failures - that's the value of keeping this O-ring on hand during every pump service.

• Prevents Fluid Leaks – The precision 2.62 mm x 17.13 mm sizing creates a tight, controlled seal in compatible Comet pump manifolds and fittings, stopping messy and costly fluid escape at valve seats and housing interfaces.

• Maintains Operating Pressure – The O-ring functions to maintain pressure integrity and prevent fluid leakage. A fresh ring keeps rated pressure stable, which directly improves spray pattern consistency, pump output, and cleaning performance across the system.

• Reduces Unplanned Downtime – Proactively replacing worn O-rings during scheduled service intervals prevents mid-job failures and emergency shutdowns. The Comet 1210.0046.00 is commonly included in valve repair kits, making planned maintenance straightforward.

• Compatible with Common Chemicals – The NBR rubber material handles many water-based solutions, light oils, and common detergents found in agricultural spraying and pressure-washing applications. Always verify compatibility with your specific chemicals before use.

• Easy, Low-Cost Maintenance Item – Swapping an O-ring is a quick task most technicians can complete without specialized tools, extending overall pump life at minimal cost.

What Makes the 1210.0046.00 O Ring Different

Generic O-rings often deviate in hardness, compound quality, or dimensional tolerance - small differences that lead to early failure under real pump operating conditions. The Comet 1210.0046.00 is built to eliminate those risks.

• Exact OEM Dimensions – The precise 17.13 mm inner diameter and 2.62 mm cross-section are designed to match Comet pump grooves and housings exactly, minimizing the risk of blow-by or extrusion under pressure.

• Application-Ready Material – The black rubber / Nitrile-Buna N70 construction (variant dependent) provides a balanced 70 durometer hardness that seals reliably under pressure without excessive compression set over time.

• Verified Cross-Reference – Barens Part #3003 provides an industry-recognized equivalent, simplifying sourcing for service shops that maintain Barens inventory alongside Comet OEM parts.

• Designed for Pump Environments – This O-ring withstands the vibration, temperature cycling, and exposure to lubricants and cleaning solutions typical of Comet diaphragm pump duty within its material limits.

How It Works in Your Comet Pump Assembly

The Comet 1210.0046.00 serves as a valve seat seal in various pumps, acting as either a static or semi-dynamic seal within the pump head, manifold, or pressure-control assembly. The O-ring aids in managing intake and discharge performance in pumps by preventing fluid from bypassing critical sealing surfaces.

Step 1 – Positioning in the Seal Groove

The O-ring sits in a machined groove or cavity within the pump head, manifold, or fitting. The correct sizing - 2.62 mm cross-section and 17.13 mm inner diameter - ensures controlled compression when mating components are fastened together. Too much compression causes extrusion; too little allows bypass. This ring is dimensioned for the precise groove geometry found in compatible Comet assemblies.

Step 2 – Sealing Under Pressure

When the pump pressurizes, system pressure forces the NBR rubber material to expand slightly against mating surfaces, creating a tight fluid barrier. The 70 durometer hardness provides the right balance of elasticity and firmness to prevent bypass of water, detergent, or solution across typical Comet pump operating ranges. The Comet 1210.0046.00 is listed for several sealing locations in pump assemblies, and at each location this pressure-activated seal mechanism is what keeps the system operating efficiently.

Step 3 – Maintaining Performance Over Time

A correctly installed O-ring maintains its shape and sealing force through thousands of pressurization and depressurization cycles. However, all elastomers wear. Periodic inspection during routine service catches flat-spotting, micro-cracking, surface glazing, or chemical swelling before these conditions cause leaks. Replacement parts and specifications for Comet pumps are documented in parts diagrams - always confirm the part number against the exploded view for your specific pump model.

Product Details

• Part Number: Comet 1210.0046.00 (also cross-referenced as Barens Part #3003)

• Material: Black rubber / Nitrile-Buna N70 (70-durometer nitrile, variant dependent)

• Dimensions: 2.62 mm cross-section x 17.13 mm inner diameter (metric)

• Color: Black, for easy visual identification against metal and plastic pump components

• Typical Use: Sealing interfaces in selected Comet pump models and accessories - including manifolds, valve housings, and fittings where this exact dimension is specified in the parts diagram. The Comet 1210.0046.00 is compatible with the MC25 diaphragm pump and is also used in ZWD, FW, and LW pump families.

• Operating Environment: Suitable for many water-based fluids, light oils, and compatible detergents at standard pump operating temperatures and pressures. Consult a nitrile compatibility chart for aggressive chemicals, strong solvents, or high-temperature applications.

• Packaging: These are sold individually. Technicians often purchase multiple O-rings to keep as spares during routine pump service and valve kit rebuilds.

Who This O Ring Is For

This O-ring is a maintenance and repair component for specific Comet pump equipment - not a universal seal for every pump on the market.

• Service Technicians and Repair Shops – Professionals who regularly rebuild or service Comet pumps and want OEM-style seals ready for immediate use.

• Facility Maintenance Teams – Staff responsible for keeping pressure washers, sprayers, or agricultural systems running with minimal downtime and consistent output.

• Equipment Owners and Operators – Farmers, contractors, and cleaning professionals who perform basic pump maintenance and need the correct replacement part without guesswork.

Cross-check your pump's parts breakdown to confirm that 1210.0046.00 (or Barens Part #3003) is the correct O-ring for your specific model before ordering. Generic equivalents for the Comet 1210.0046.00 should match its dimensions and material to avoid sealing failures.

Frequently Asked Questions

Below are answers to the most common questions about sizing, compatibility, and installation for this O-ring.

Is the Comet 1210.0046.00 O Ring the right size for my pump?

The dimensions are 2.62 mm x 17.13 mm. It should only be used where that exact size is listed in the official Comet parts diagram for your pump model. Check your pump's manual or exploded parts view to match the part number before purchase.

What material is this O ring made from, and what fluids is it compatible with?

The material of the Comet 1210.0046.00 O-ring is NBR rubber - specifically black rubber / Nitrile-Buna N70 (variant dependent). This compound handles water, light oils, and many cleaning solutions well. For strong solvents, fuels, or unusually hot fluids, verify compatibility using a nitrile chemical resistance chart or consult the manufacturer.

How often should I replace the 1210.0046.00 O ring?

Inspect the O-ring during each pump service interval. Replace it whenever you see signs of wear: flattening, cracking, surface gloss changes, or swelling. Heavy-duty or continuous-use environments - particularly those involving temperature cycling or aggressive detergents - may require more frequent replacement.

Can I substitute a generic O ring with similar dimensions?

While a generic ring may physically fit, deviations in hardness, compound quality, or dimensional tolerance can lead to leaks or shortened service life. For consistent, reliable performance, use the genuine Comet 1210.0046.00 or a recognized equivalent such as Barens Part #3003.

Do I need special tools to install this O ring?

No specialized tools are typically required. Careful use of basic hand tools and a light application of fluid-compatible grease on the O-ring and groove is usually sufficient for proper installation. Always depressurize the system and disconnect power before working on any pump components.

Ready to Restore a Leak-Free Seal?

The Comet 1210.0046.00 O-ring delivers OEM-style fit, Nitrile-Buna N70 durability, and exact 2.62 mm x 17.13 mm dimensions for compatible Comet pumps across the MC25, ZWD, FW, and LW families. It's a small part that protects your entire system from pressure loss, fluid leaks, and unplanned downtime.

Confirm the part number against your pump's parts diagram, and keep several O-rings - including Barens Part #3003 equivalents - in stock so you're ready for your next scheduled service.

Order the correct replacement O-ring before wear becomes a leak.