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Aluminium dust cap socket, black finish, 4 inch female coupler with locking arm

Value Brand

Value Brand 4 in Dust Cap Socket Aluminum Female Coupler 100 psi Nitrile Gasket Locking Arm

SKU CH-VG7C-23ED3

A 4-inch aluminum dust-cap socket with a nitrile gasket and locking arm rated to 100 psi

  • Aluminum body resists corrosion for long service life
  • Female coupler design enables quick hose connections
  • 100 psi rating handles demanding water or air lines
  • Nitrile gasket seals reliably across temperature swings
  • Locking arm secures the cap during transport or storage

4 in Aluminum Dust Cap for Female Couplers

This aluminum dust cap fits a 4 in female coupler socket and seals the connection when the line is not in use. It is built for plumbing and fluid-transfer systems that require a secure closure at 100 psi maximum working pressure at 70 F.

Nitrile gasket and locking arm seal the socket

The nitrile gasket provides a chemical-resistant seal inside the 4 47/64 in socket bore while the integrated locking arm holds the cap firmly in place. Both features work together to prevent leakage and keep contaminants out of the coupling.

Simple push-on installation with arm engagement

The cap slides onto the female coupler and the locking arm snaps over the body to lock it. Misalignment of the arm or a worn gasket are the most common issues that prevent a proper seal.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $27.99
Pricier than about 66% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameZORO SELECT

Questions about this item

When will the nitrile gasket on this 4 in dust cap need replacement?

The nitrile gasket should be inspected regularly and replaced if it shows cracking, hardening or deformation that prevents a proper seal at the 100 psi rating.

What pressure limit applies first during continuous use of this aluminum female coupler?

The maximum working pressure is 100 psi at 70 F, so sustained operation must stay at or below that pressure to avoid exceeding the coupling rating.

How much heat does this dust cap generate when it stays pressurised all day?

The dust cap is a passive aluminum fitting with no moving parts or electrical components, so it does not generate heat during continuous pressurised use.

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