Aftermarket seals for selected Gorman-Rupp applications | GMR sleeve-and-shim style | GRC cartridge style
Luwint offers GMR and GRC mechanical seal ranges for selected Gorman-Rupp pump applications. The GMR range uses a component arrangement with a separate sleeve and shims, while the GRC range uses a cartridge-style assembly.
These two configurations provide replacement options for different existing seal arrangements. Correct selection starts with the pump model, serial number and original seal assembly, followed by a check of the dimensions and materials required for the duty.
Why Choose the GMR / GRC Range
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Two assembly styles: identify the sleeve-and-shim or cartridge arrangement used in the existing pump.
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Imperial shaft sizes: the Luwint catalogue lists 1¼-inch and 1½-inch versions in both ranges.
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Component identification support: photos, measurements and the original part number help establish the correct replacement.
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Application-based selection: match the seal configuration and materials to the liquid and operating conditions.
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Sydney supply support: contact Luwint for assistance with identification, pricing and current availability.
Choosing the Correct Model
| Feature | GMR | GRC |
|---|---|---|
| Catalogue description | Sleeve-and-shim style | Cartridge style |
| Assembly arrangement | Separate seal components, sleeve and shims | Cartridge-style seal assembly |
| Shaft sizes listed | 1¼″ and 1½″ | 1¼″ and 1½″ |
| Key checks | Sleeve dimensions, component layout and installation setting | Cartridge dimensions and matching pump arrangement |
The listed shaft sizes are equivalent to 31.75 mm and 38.10 mm.
A matching shaft diameter does not establish interchangeability. Check the stationary-seat location, sleeve arrangement, working length and housing dimensions against the original assembly.
Confirm whether the replacement requires a sleeve, shims, gaskets or other associated parts. The required installation setting and adjustment procedure should be checked against the manual for the specific pump.
Size and Duty Information
| Parameter | Selection information |
|---|---|
| GMR catalogue shaft sizes | 31.75 mm and 38.10 mm |
| GRC catalogue shaft sizes | 31.75 mm and 38.10 mm |
| Pump identification | Model and serial number |
| Seal identification | Original part number, assembly style and dimensions |
Provide the liquid, seal-chamber pressure, operating temperature and shaft speed when requesting a quotation. The selected seal’s operating limits must be confirmed for its materials and configuration.
Cross-Reference and Identification
| Luwint range | Application reference |
|---|---|
| GMR | Selected Gorman-Rupp pumps using a sleeve-and-shim seal arrangement |
| GRC | Selected Gorman-Rupp pumps using a cartridge-style seal arrangement |
These are application-family references. The exact OEM seal part number and pump configuration must be checked before an aftermarket replacement is selected.
Include the pump serial number wherever possible, as pumps with the same model designation may have different production versions or parts requirements.
Where It Is Used in Australia
Subject to a verified pump and seal match, these ranges can be considered for:
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Wastewater transfer and sewage pumping
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Construction and site dewatering
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Industrial water transfer
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Agricultural drainage and water management
For liquids containing solids, identify their type, concentration and abrasiveness so the sealing materials and arrangement can be assessed.
Materials and Supply Configuration
Contact Luwint to confirm the face pairing, elastomer and metal specification available for the selected assembly.
Material selection should account for the liquid, solids content, temperature and any seal lubrication requirements. Confirm the complete supply scope, including any sleeve, shims, gaskets and associated components, with the quotation.
Sydney Supply. Help with Selection.
Ask Luwint to confirm current availability, pricing and dispatch timing.
For identification assistance, send a clear photo of the pump nameplate, the pump model and serial number, the original seal part number, and photos of the removed assembly. Include the shaft or sleeve diameter, key installation dimensions, liquid and operating conditions.
Ask us for the catalogue page and the relevant dimensional information for your application.
Contact: Wayne Liao
Email: wayne@luwintonline.com
Mobile: 0433 986 633
LUWINT supplies aftermarket replacement products for original equipment applications. We are an independent supplier and are not affiliated with or endorsed by Gorman-Rupp. Brand names and model references are used solely for identification and cross-reference.