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Brand: EagleBurgmann
EagleBurgmann HGH201 Semi-Split Single Mechanical Seal
Description
A semi-split single seal for large shafts that avoids dismantling the pump
The EagleBurgmann HGH201 is a semi-split, balanced single mechanical seal with multiple rotating springs, for plain shafts of 50 to 310 mm (larger diameters on request). Only the sliding faces and O-rings are split, so the seal can be fitted around the shaft without dismantling the pump or removing the coupling, which EagleBurgmann lists as the economic advantage together with reduced down-times and installation times. The springs are protected from the product, the design is rugged and the split seat can be used on both sides.
The datasheet lists sea water desalination, pulp with up to 5 percent fibre content, water and waste water technology, power plants, shipbuilding, pulp and paper, cooling water pumps, stern tubes, defibrators, chest agitators, storage pumps, water turbines and gears as recommended applications.
Technical specifications
| Parameter | Specification |
|---|---|
| Seal type | Semi-split balanced single seal; multiple springs rotating; independent of direction of rotation; split sliding faces and O-rings |
| Shaft diameter d1 | 50 to 310 mm (2 to 12.20 in); larger diameters on request |
| Pressure p1 | 25 bar (363 PSI) |
| Temperature | t1 = 150 C (302 F) |
| Sliding velocity | 20 m/s (66 ft/s) |
| Axial movement | +/-2.0 mm |
| Seal face | Silicon carbide (Q1, Q2) |
| Seat | Silicon carbide (Q1, Q2); carbon graphite antimony impregnated (A); carbon graphite resin impregnated (B) |
| Secondary seals | FKM (V), EPDM (E), NBR (P) |
| Metal parts | CrNiMo steel (G) |
| Torque transmission | Set screws; for d1 of 105 mm and above four cone-point set screws offset 90 degrees |
| Shaft | Plain shafts (HGH201) |
Variants and sample dimensions
| Variant | Description |
|---|---|
| HGH200 | Unsplit version as original equipment |
| HGH210 | Cartridge version, based on HGH210; first fit comes unsplit |
| HGH211 | Variant for stepped shafts; modified driver collar |
| HGH300S1 | Stationary design; first fit with unsplit faces and O-rings; seal face also in carbon graphite (B); dimensions on request |
| VGH300S1 | Fully split seal based on the HGH, stationary design with rotating seat; all parts split |
| Shaft d1 (mm) | d2 | d3 | l1 installed length |
|---|---|---|---|
| 50 | d2 60 | d3 95 | l1 95.3 |
| 100 | d2 110 | d3 145 | l1 95.3 |
| 200 | d2 212 | d3 245 | l1 109.2 |
| 310 | d2 322 | d3 360 | l1 109.2 |
The dimension table lists d1 from 50 to 310 mm with the matching housing dimensions in millimetres. For first fit EagleBurgmann supplies the seal unsplit (HGH210), and for disassembly of an unsplit seal the faces, seat and O-rings should be broken or cut.
Selection and installation notes
A split seal is chosen for service on large pumps, stern tubes, agitators and other machines where stripping the equipment to fit a conventional seal would be expensive. Confirm the shaft is plain and the seal chamber has radial room for the d3 housing, verify that the 25 bar and 150 C limits cover the duty, and choose the seat material for the medium, for instance silicon carbide where fibres or sand are present. Because the faces are split, fit and alignment instructions from the manufacturer should be followed closely at installation. EagleBurgmann notes that the exact application conditions must be notified before a guarantee can be given.
Other seals for pumps are in the pumps category; for a standard single cartridge seal compare the John Crane Type 5610.
Documents and quotation
The EagleBurgmann HGH201 data sheet (4 pages, EN) lists the operating range, materials, parts, variants and the dimension table is attached to this page and is the manufacturer’s own document, not a Seven Star summary.
Before ordering confirm shaft diameter and whether the shaft is plain or stepped, the liquid, temperature, pressure and speed, and the face, seat and elastomer codes. Seven Star LLC, an independent supplier in Muscat, quotes the EagleBurgmann HGH201 against your duty point and delivery requirement; send the document tag, flow, head and liquid so the right size can be confirmed before an offer is issued.
Datasheets & Documents
- Datasheet EagleBurgmann HGH201 split seal data sheet Download
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About brand
EagleBurgmann is a maker of industrial seals, formed in 2004 as an alliance between Burgmann Industries, part of the German Freudenberg Group, and Japan's Eagle Industry. Burgmann was founded in Dresden in 1884 by Feodor Burgmann, who invented a machine-braided self-lubricating stuffing box packing. After 1945 the company restarted in Bavaria and has been headquartered in Wolfratshausen since 1951.
Seven Star LLC is an independent supplier in Muscat. We list EagleBurgmann seals for pump and rotating equipment users in Oman and the GCC.
EagleBurgmann company profile
| Founded | 1884, Dresden, Germany, by Feodor Burgmann |
|---|---|
| Headquarters | Wolfratshausen, Germany, since 1951 |
| Ownership | Freudenberg Group and Eagle Industry |
| Formed as EagleBurgmann | 2004; worldwide rebranding from 2006 to 2011 |
| Product families | H7N, M7N and MFL mechanical seals, cartridge seals for pumps and mixers, dry gas seals for compressors, seal supply systems, expansion joints, gaskets and compression packings |
Milestones
- 1884: Feodor Burgmann starts the company in Dresden.
- 1951: The headquarters moves to Wolfratshausen.
- 2004: The EagleBurgmann group is formed.
EagleBurgmann product series
Component seals include the H7N balanced pusher seal, the H74-D balanced dual pusher seal and the MFL85N metal bellows seal. Cartridge seals include the Cartex-SN single and Cartex-DN dual cartridge seals and the SHV high-pressure cartridge seal to API 682.
The HRGS-D is a gas-lubricated double cartridge seal and the HGH201 a semi-split single seal for large shafts.
Single seals suit clean, non-hazardous liquids, while dual seals with a barrier or buffer fluid are used for hazardous, toxic or crystallising media. API 682 cartridge seals are standard in refineries and petrochemical plants, and metal bellows seals suit high temperatures where elastomers are limited.
Where EagleBurgmann seals are used
Centrifugal pumps, mixers and agitators in refineries, chemical plants, water and wastewater, power plants and pulp and paper.
EagleBurgmann products we list
Ordering EagleBurgmann seals: what we need
Send the seal type and size or the existing drawing, pump make and model, shaft diameter, medium, pressure, temperature and speed, and the seal supply plan.
Facts checked against EagleBurgmann's own company history and Freudenberg press releases, October 2026.
Browse EagleBurgmann products by category: Pumps.
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Frequently Asked Questions
What does semi-split mean for the HGH201?
Only the sliding faces and O-rings are split, so the seal can be fitted without dismantling the pump.
What shaft diameters does the HGH201 cover?
50 to 310 mm (2 to 12.20 in), with larger diameters on request.
What are the pressure and temperature limits?
The datasheet gives p1 of 25 bar and t1 of 150 C.
Which version is for stepped shafts?
The HGH211, with a modified driver collar for securing on stepped shafts.
Which applications are listed?
Sea water desalination, pulp up to 5 percent fibre, water and waste water, power plants, shipbuilding and cooling water pumps among others.
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