O-ring LF L1186421

An o-ring creates a watertight seal between two surfaces by compressing its elastic material into the gap. The EPDM compound used here resists hot water, steam and cleaning chemicals without hardening or cracking, so the joint stays leak-free through repeated heating and cooling cycles. This particular ring is sized to fit the water circuits of professional coffee machines and commercial dishwashers, where it prevents drips and pressure loss that would otherwise disrupt brewing or washing programmes.

To replace the ring, the operator first isolates the water supply and drains any residual pressure. The old ring is removed from its groove, the seating is cleaned of scale or debris, and the new ring is pressed into place without twisting or stretching. Once the surfaces are realigned and the fasteners tightened, the system is repressurised and checked for leaks before returning to service.

The ring is moulded in black EPDM rubber with a thickness of 1.78 mm and an internal diameter of 4.48 mm. These dimensions match the grooves in the listed equipment, ensuring a snug fit without over-compression that could damage the seal.

This spare part fits a wide range of professional coffee machines and commercial dishwashers, including models from BRASILIA, Elektra, Faema, Gaggia, Necta Vending, Promac, Rancilio, Saeco, Lavazza, Wittenborg, Desco, Dihr, Hilta, Ime Omniwash, Kromo, Univerbar and San Marco. The exact list of compatible models is provided in the product reference, allowing operators to confirm suitability before ordering.

In the catalogue, the O-ring 02018 is grouped with maintenance spares for beverage and ware-washing equipment, where it serves as a direct replacement for worn seals in water and steam circuits.