Gearbox O-Ring Itl 23mm

The Thwaites Gearbox O-Ring ITL 23mm (OEM T53025) is a replacement sealing component used within the transmission and gearbox assembly of compatible Thwaites dumpers. The O-ring provides a seal between mating components within the gearbox system, helping prevent transmission oil from escaping and maintaining the integrity of the assembly.

Designed for use in demanding heavy-duty dumper applications, the O-ring is manufactured to provide reliable sealing against transmission oil while withstanding vibration, temperature changes and repeated machine operation. Replacing a worn, hardened or damaged O-ring helps maintain effective oil containment and reduce the risk of leaks around the gearbox assembly.

FUNCTION AND OPERATION

• Provides a seal between mating gearbox components
• Helps prevent transmission oil leakage
• Maintains the integrity of the gearbox sealing system
• Designed to withstand vibration and operating temperature changes
• Helps maintain correct transmission oil levels
• Provides a replacement for a worn, hardened or damaged original O-ring

TECHNICAL DETAILS

• OEM Part Number: T53025
• Brand: Thwaites
• Type: Gearbox O-ring
• Size: ITL 23mm
• Function: Transmission component sealing
• Application: Selected Thwaites dumper transmissions
• Associated Assembly: Gearbox / transmission

TYPICAL APPLICATIONS

Suitable for compatible Thwaites dumpers and transmission assemblies, including selected:

• Forward-tip dumpers
• Powerswivel dumpers
• 6-tonne dumpers
• 9-tonne dumpers
• Other Thwaites machinery fitted with compatible transmission assemblies

Always verify compatibility using the machine model, transmission specification and OEM part number before ordering, as gearbox sealing arrangements can vary between machine versions.

IMPORTANT INFORMATION

O-rings should be replaced whenever they show signs of hardening, cracking, flattening, distortion or deterioration. Reusing an old sealing ring during gearbox maintenance can result in oil leakage and may compromise the reliability of the transmission assembly.

Before installation, ensure the sealing groove and mating surfaces are clean and free from dirt, old seal material or damage. Fit the replacement O-ring carefully without twisting, cutting or overstretching it, and check the gearbox for signs of leakage after the machine has been returned to service.

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery*
£11.95 or FREE for orders over £150
Orders placed before 4pm Monday to Friday will be delivered on the next business day.
Orders placed after 4pm on Friday will be delivered the following Tuesday.
*Next day delivery applies to stocked items only. Availability can be found on the product pages.

Premium Delivery*
£30.00 for delivery before 10:30am
£25.00 for delivery before 12:30pm
*Premium delivery applies to stocked items only. Availability can be found on the product pages.

For all other countries, please click here for full delivery information.

**Separate carriage charges apply to bulk products such as 205L barrels.