IMPA: 611821

Marine Straight Nose Internal Stop Ring Pliers (IMPA 611821)

These straight nose internal stop ring pliers are specifically designed for the removal and installation of internal snap rings and circlips in confined spaces. A professional choice for marine engineers and technicians, they offer precise control when servicing pumps, gearboxes, valves, and other deck equipment where reliable locking rings are essential.

Manufactured from heat-treated carbon steel with a durable anti-corrosion finish, the pliers withstand the harsh saltwater environment of a ship. The straight tips provide direct access to internal ring grooves, while the spring-loaded handles with non-slip grips reduce hand fatigue during repeated use. A practical addition to any vessel's tool locker, these pliers meet the stringent requirements of international ship supply standards.

Key Features

Technical Specifications

SpecificationDetail
Product TypeInternal Stop Ring Pliers
Nose StyleStraight
IMPA Code611821
Tip Size1.2 mm (0.045")
Overall Length180 mm (7")
Ring Capacity12–50 mm (1/2"–2")
MaterialDrop-forged carbon steel
HandleNon-slip dipped grip
Spring LoadedYes
Net Weight0.24 kg (0.53 lbs)

Frequently Asked Questions

What is an internal stop ring plier used for?

Internal stop ring pliers are used to compress internal snap rings or circlips so they can be placed/removed from a bore or housing. This straight-nose version is ideal for direct-access applications in marine machinery.

What is the difference between straight and angled internal ring pliers?

A straight-nose plier works best when the snap ring is unobstructed. Angled pliers are needed when the ring is in a recessed or offset position. This model is the standard choice for common marine equipment repair.

How do I maintain these pliers in a marine environment?

After each use, wipe the pliers dry. Apply a light coat of oil to the hinge and tips to prevent corrosion. The anti-corrosion finish provides basic protection, but regular maintenance ensures long service life.

What is the IMPA code for these pliers?

The IMPA code is 611821, which classifies these pliers as a hand tool for ship chandlery and marine supply purposes.

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