Group Head Seal for Breville Dual Boiler BES900, BES920, BES980, BES990

Group Seal for Breville Dual Boiler and Oracle

Breville’s 58 mm machines run hot, stable groups that are kind to coffee but hard on seals. After a year or two of daily use the seal can shrink and crack, letting water escape around the portafilter ears. Water on the drip tray before the pump even starts is another common sign.

Silicone Replacement

Made in cream silicone with the stepped profile used on these groups, it is about 70 mm across and 8 mm tall according to the supplier. The listing gives Breville’s reference BES900/03.38 for this seal.

Specifications

• Breville Dual Boiler Group Seal Fits: Breville BES900, BES920, BES980, BES990
• Breville Dual Boiler Group Seal Portafilter size: 58 mm
• Breville Dual Boiler Group Seal Outside diameter (supplier): approx. 70 mm
• Breville Dual Boiler Group Seal Height (supplier): approx. 8 mm
• Breville Dual Boiler Group Seal Part reference: BES900/03.38
• Breville Dual Boiler Group Seal Material: Silicone

When to Change It

A good habit is to replace the seal once a year with daily use. The 54 mm Barista Express family needs the BES810–BES870 seal, and the water and steam joints use the hose connector O-rings.

Our repair and servicing team can fit it for you, and our cleaning products help keep the group clear.