HJ4610 Single Cartridge Mechanical Seal — Replacement for John Crane Type 4610
The Formax HJ4610 is a compact, single cartridge O-ring pusher mechanical seal offered for selected John Crane Type 4610 replacement applications.
It combines the rotating and stationary sealing components in a cartridge assembly for compatible industrial pump installations.
Supplier-listed sizes cover 24–70 mm and 1–2.75 inches. Confirm the installation dimensions, materials and operating duty before ordering.
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- Product Overview
The HJ4610 is a single mechanical seal supplied in a cartridge configuration. The assembly incorporates the sealing components, sleeve and gland to simplify handling and installation compared with separately fitted component seals.
The O-ring pusher design accommodates face wear and limited axial movement through the spring-loaded sealing assembly. Seal face materials, secondary seals and metal components are selected according to the process fluid and operating conditions.
For replacement enquiries, compare the complete cartridge dimensions with the existing seal and pump installation. A matching model designation or shaft diameter alone does not establish compatibility.
- Design Features
| Feature | Description |
|---|---|
| Product Model | Formax HJ4610 |
| Seal Arrangement | Single mechanical seal |
| Construction | Cartridge assembly |
| Seal Technology | O-ring pusher design |
| Installation Components | Seal sleeve and gland supplied as part of the cartridge configuration |
| Metric Size Range | Selected sizes from 24 to 70 mm |
| Inch Size Range | Selected sizes from 1.000 to 2.750 inches |
| Material Selection | Face, secondary seal and metal options for different duties |
| Replacement Reference | Selected John Crane Type 4610 configurations, subject to verification |
- Operating Parameters
| Parameter | HJ4610 Supplier-Stated Specification |
|---|---|
| Seal Chamber Temperature | −20 to +205°C / −4 to +401°F |
| Maximum Seal Chamber Pressure | 21 bar / 2.1 MPa / approximately 305 psi |
| Maximum Sliding Velocity | 15 m/s / approximately 49 ft/s |
| Metric Shaft Sizes | 24–70 mm; selected sizes listed below |
| Inch Shaft Sizes | 1–2.75 inches; selected sizes listed below |
| Permissible Shaft Speed | Confirm for the selected seal size and configuration |
These values are taken from the HJ4610 supplier information. Confirm the allowable operating envelope for the quoted configuration before purchase. Maximum pressure, temperature and sliding velocity must not be assumed to apply simultaneously.
The full temperature range does not apply to every secondary seal material.
- Material Options
| Component | Supplier-Listed Options |
|---|---|
| Seal Faces | Carbon graphite, reaction-bonded silicon carbide, pressureless-sintered silicon carbide, tungsten carbide |
| Secondary Seals | NBR, FKM, EPDM, FFKM |
| Spring and Metal Components | Stainless steel 304, stainless steel 316, Hastelloy C-series alloy subject to grade confirmation |
The rotating and stationary face pairing must be specified for the application. Select elastomers and metal grades according to fluid chemistry, concentration, temperature, lubrication and solids content.
Specific branded elastomers and alloy grades are available only when confirmed in the quotation and supporting documentation.
- Dimensions & Installation
Use the following supplier tables with the corresponding HJ4610 assembly drawing. Confirm all dimensions, tolerances, flush-port details and installation clearances before ordering.
Metric and inch sizes are separate configurations. They must not be treated as interchangeable solely by converting the nominal shaft diameter.
- Metric Dimensional Table — All Dimensions in mm
| D1 | D4 Min. | D4 Max. | D26 | L90 Min. | L91 | N Min. | N Max. | M |
|---|---|---|---|---|---|---|---|---|
| 24 | 40.0 | 49.2 | 104.8 | 36 | 32 | 66.7 | 95.3 | 11.1 |
| 25 | 41.0 | 49.2 | 104.8 | 36 | 32 | 66.7 | 95.3 | 11.1 |
| 28 | 44.0 | 52.4 | 108.0 | 36 | 32 | 69.9 | 98.4 | 11.1 |
| 30 | 46.0 | 55.6 | 111.0 | 36 | 32 | 73.0 | 101.6 | 11.1 |
| 32 | 47.6 | 55.6 | 111.0 | 36 | 32 | 73.0 | 101.6 | 11.1 |
| 33 | 49.0 | 58.7 | 114.3 | 36 | 32 | 73.0 | 101.6 | 11.1 |
| 35 | 50.8 | 58.7 | 114.3 | 36 | 32 | 77.8 | 104.8 | 11.1 |
| 38 | 57.15 | 63.5 | 127.0 | 37 | 33 | 87.3 | 114.3 | 14.3 |
| 40 | 60.0 | 63.5 | 127.0 | 37 | 33 | 87.3 | 114.3 | 14.3 |
| 43 | 63.0 | 66.7 | 133.4 | 37 | 33 | 90.5 | 120.7 | 14.3 |
| 45 | 63.5 | 66.7 | 133.4 | 37 | 33 | 90.5 | 120.7 | 14.3 |
| 48 | 66.7 | 76.2 | 139.7 | 37 | 33 | 98.4 | 127.0 | 14.3 |
| 50 | 69.8 | 76.2 | 139.7 | 37 | 33 | 98.4 | 127.0 | 14.3 |
| 53 | 73.0 | 84.1 | 146.0 | 37 | 33 | 111.1 | 130.2 | 17.5 |
| 55 | 73.0 | 84.1 | 146.0 | 37 | 33 | 111.1 | 130.2 | 17.5 |
| 58 | 79.4 | 90.5 | 152.4 | 37 | 33 | 117.5 | 136.5 | 17.5 |
| 60 | 79.4 | 90.5 | 152.4 | 37 | 33 | 117.5 | 136.5 | 17.5 |
| 63 | 82.6 | 98.4 | 158.8 | 37 | 36 | 123.8 | 142.9 | 17.5 |
| 65 | 88.9 | 98.4 | 158.8 | 37.5 | 36 | 123.8 | 142.9 | 17.5 |
| 70 | 95.0 | 98.4 | 158.8 | 37.5 | 36 | 123.8 | 142.9 | 17.5 |
- Inch Dimensional Table — All Dimensions in inches
| D1 | D4 Min. | D4 Max. | D26 | L90 Min. | L91 | N Min. | N Max. | M |
|---|---|---|---|---|---|---|---|---|
| 1.000 | 1.615 | 1.940 | 4.125 | 1.422 | 1.267 | 2.62 | 3.75 | 0.437 |
| 1.125 | 1.730 | 2.060 | 4.250 | 1.422 | 1.267 | 2.75 | 3.87 | 0.437 |
| 1.250 | 1.875 | 2.190 | 4.370 | 1.422 | 1.267 | 2.87 | 4.00 | 0.437 |
| 1.375 | 2.000 | 2.310 | 4.500 | 1.422 | 1.267 | 3.06 | 4.12 | 0.437 |
| 1.500 | 2.250 | 2.500 | 5.000 | 1.462 | 1.313 | 3.43 | 4.50 | 0.563 |
| 1.625 | 2.360 | 2.500 | 5.000 | 1.462 | 1.313 | 3.43 | 4.50 | 0.563 |
| 1.750 | 2.500 | 2.625 | 5.250 | 1.462 | 1.313 | 3.56 | 4.75 | 0.563 |
| 1.875 | 2.625 | 3.000 | 5.500 | 1.462 | 1.313 | 3.87 | 5.00 | 0.563 |
| 2.000 | 2.750 | 3.000 | 5.500 | 1.462 | 1.313 | 3.87 | 5.00 | 0.563 |
| 2.125 | 2.875 | 3.310 | 5.750 | 1.462 | 1.313 | 4.37 | 5.12 | 0.563 |
| 2.250 | 3.000 | 3.310 | 5.750 | 1.462 | 1.313 | 4.37 | 5.12 | 0.689 |
| 2.375 | 3.130 | 3.560 | 6.000 | 1.462 | 1.313 | 4.62 | 5.37 | 0.689 |
| 2.500 | 3.250 | 3.875 | 6.250 | 1.462 | 1.433 | 4.87 | 5.62 | 0.689 |
| 2.625 | 3.500 | 3.875 | 6.250 | 1.482 | 1.433 | 4.87 | 5.62 | 0.689 |
| 2.750 | 3.740 | 3.875 | 6.250 | 1.482 | 1.433 | 4.87 | 5.62 | 0.689 |
Dimensions are transcribed from the HJ4610 supplier table. D4 is identified as the seal chamber box-bore range. Interpret D26, L90, L91, N and M using the matching supplier drawing.
These tables are catalogue references, not approved manufacturing drawings. Differences from the original seal dimensions must be reviewed before replacement approval.
- Typical Applications
| Service | Candidate Equipment |
|---|---|
| Water and Wastewater | Compatible process and circulation pumps |
| Chemical Processing | Suitable chemical transfer and process pumps |
| General Industrial Service | Compatible horizontal and vertical pump installations |
| Oil Handling | Suitable lubricated liquid-service pump duties |
| Pulp and Paper | Compatible process and circulation applications |
Suitability depends on the fluid, solids content, pressure, temperature, speed and installation arrangement.
Drinking-water, food-processing and pharmaceutical duties require configuration-specific material and compliance documentation. Abrasive slurry, crystallising fluids and gas service require a separate application review.
- John Crane Type 4610 Replacement Compatibility
The Formax HJ4610 is offered for selected John Crane Type 4610 replacement applications. Confirm dimensional fit and the operating envelope for the exact configuration before ordering.
A shared model reference does not establish direct interchangeability. Review the shaft fit, seal chamber bore, axial installation space, gland geometry, mounting arrangement and flush connections.
| Compatibility Check | Information Required |
|---|---|
| Existing Seal | Complete model, size code and material specification |
| Shaft or Sleeve | Diameter, fit and available installation length |
| Seal Chamber | Bore diameter, depth and relevant clearances |
| Gland Mounting | Bolt arrangement, mounting dimensions and available space |
| Cartridge Dimensions | D26, L90, L91, N and M, as defined by the supplier drawing |
| Flush Connections | Port size, thread, position and required piping arrangement |
| Operating Duty | Fluid, pressure, temperature, shaft speed and solids content |
| Documentation | Equipment drawing, existing seal drawing or measured photographs |
Type 4620P dual-seal configurations require a separate product selection and must not be treated as the same assembly as the single-seal HJ4610.
- Frequently Asked Questions
| Question | Answer |
|---|---|
| Is HJ4610 a single or dual cartridge seal? | This page covers the HJ4610 single cartridge seal. Dual-seal enquiries require a separately specified assembly. |
| Is it a bellows seal? | No. The HJ4610 is an O-ring pusher cartridge seal. |
| What sizes are listed? | The supplier tables cover selected metric sizes from 24 to 70 mm and inch sizes from 1.000 to 2.750 inches. |
| Is the speed limit 3600 rpm? | The HJ4610 supplier lists a sliding velocity limit of 15 m/s. Confirm permissible rpm for the selected face diameter and configuration. |
| Does the original seal’s NSF-61 statement apply to this replacement? | No. Any required drinking-water compliance documentation must be confirmed for the actual supplied product. |
| Can this seal directly replace every Type 4610 assembly? | No blanket interchangeability is claimed. Installation dimensions, materials and operating conditions must be checked for the exact application. |
- Request a Quote
Need a replacement for your John Crane Type 4610 seal? Send the existing seal designation, shaft size, installation drawing, operating conditions and required quantity to Formax Fluid for review and quotation.
John Crane and Type 4610 are trademarks or product designations of their respective owners. Formax Fluid is an independent supplier and is not affiliated with or endorsed by John Crane.
