4" EPDM Camlock Gasket – Replacement Cam and Groove Coupling Seal

RKCG-400 – 4" EPDM Replacement Camlock Gasket

The RKCG-400 is a 4" EPDM rubber replacement gasket for cam and groove (camlock) couplings. The gasket seats inside the female coupler (Type C or D) and provides the sealing face against the male adapter when the cam arms are closed. Over time, heat cycling, UV exposure, and chemical contact degrade the gasket, causing weeping or spray leaks at coupling joints. Replacing gaskets on a seasonal schedule is the lowest-cost way to keep a camlock irrigation system operating without unplanned field leaks.

Key Features and Benefits

• EPDM rubber construction: Outstanding resistance to UV, ozone, weathering, and water — including chlorinated irrigation water and liquid fertilizer solutions. EPDM is the industry standard for irrigation camlock gaskets.
• Drop-in replacement: Sized to MIL-C-27487 cam and groove standards — fits any compliant 4" female coupler regardless of brand or material (aluminum, polypropylene, or stainless).
• Prevents costly field failures: A failed gasket causes immediate flow loss and potential crop stress. Stocking spares means repairs take seconds, not a trip to the supplier.
• Easy field replacement: No tools required — the old gasket lifts out and the new one presses in by hand. Couplers do not need to be removed from the line.

Specifications