Cup Rocket Set 5pc Truck Cylinder Cup Seal Installer

A 5-piece cup rocket set for fitting larger truck cylinder cup seals with less risk of snagging or marking components during installation. The tapered shape helps the seal open up gradually so it can be guided into place more smoothly.

Used for truck maintenance and cylinder sealing work where larger cup seals can be awkward to install by hand, this type of set helps during servicing, repair jobs and hydraulic work on commercial vehicles. It is especially useful when working on cylinder assemblies where a damaged seal or marked bore can lead to extra time, wasted parts or repeat work. For garages, workshops and anyone regularly handling truck cylinder repairs, it gives a more controlled way to fit seals cleanly.

The set includes five larger installer sizes for truck-related applications, covering 1-3/4" (44.5/47.5mm), 1-7/8" (48/51mm), 2-1/8" (54/57mm), 2-3/16" (56/59mm) and 2-5/16" (59/62mm). Each tapered rocket is intended to help expand the cup seal in stages before fitting, which can reduce the chance of catching the seal on the way in or scratching the O-ring cylinder surface. The size range makes it a useful set to keep close to hand for regular truck seal installation work, especially where repeated fitting jobs come up in the workshop.

Cup rocket set specifications

• Contents: 5-piece truck cup rocket installer set.
• Function: Helps fit cup seals more smoothly by expanding them gradually during installation.
• Design: Tapered cone shape to reduce snagging as the seal is guided into place.
• Covers: Sizes 1-3/4" (44.5/47.5mm), 1-7/8" (48/51mm), 2-1/8" (54/57mm), 2-3/16" (56/59mm), 2-5/16" (59/62mm).
• Application: Intended for larger truck maintenance and cylinder seal fitting work.

A practical choice for regular truck maintenance and seal fitting jobs.