CP E61 Grouphead gasket/seal 73 × 57 × 8.5mm: Blue Silicone

E61 Grouphead gasket/seal 73 x 57 x 8.5mm : Blue Silicon

A good group seal is what keeps water and pressure where they belong. This blue silicone E61 group head gasket measures 73 mm outside diameter × 57 mm inside diameter × 8.5 mm thick and is designed for selected E61-style group heads requiring this size.

The gasket creates the seal between the group head and portafilter. As an old gasket wears, hardens or becomes compressed, you may notice water leaking around the portafilter during extraction or find that the handle needs to be turned further than normal to achieve a seal.

Why Choose a Silicone Group Seal?

Compared with traditional rubber group gaskets, silicone offers several practical advantages. It is odourless and tasteless, helping avoid the smell sometimes associated with ageing rubber. Silicone also stays softer and more flexible under repeated heating, rather than baking hard in the group over time.

That flexibility makes the gasket easier to compress when locking in the portafilter and can make future removal considerably easier during servicing. Silicone is also well suited to repeated heating cycles, making it a practical choice for frequently used espresso machines.

The 8.5 mm thickness is important. E61-style machines can use different gasket thicknesses, commonly depending on the group design and wear of the group and portafilter lugs. Check the existing gasket dimensions and portafilter lock-in position before ordering.

What’s in the Box?:

Specifications:

• Brand: Coffee Parts Basics
• Product Type: Group Head Gasket / Portafilter Seal
• Material: Food-grade FDA silicone
• Colour: Blue
• Dimensions: 73 × 57 × 8.5 mm
• External Diameter: 73 mm
• Internal Diameter: 57 mm
• Thickness: 8.5 mm
• Hardness: 75 Shore
• Application: Sealing the portafilter against the espresso machine group head
• Machine Compatibility: Selected E61-style groups requiring a 73 × 57 × 8.5 mm gasket
• Selected Compatible Brands: BFC, ECM, Expobar, Faema, Futurmat, La Pavoni, Promac, Sanremo, Vibiemme and Wega
• Installation: Confirm gasket thickness and machine compatibility before fitting

  Features

  • Food-grade FDA silicone construction
  • 73 × 57 × 8.5 mm dimensions
  • 75 Shore hardness
  • Blue colour for easy identification
  • Odourless and tasteless material
  • Remains flexible under repeated heating
  • Easier to remove than hardened conventional rubber seals
  • Suitable for selected E61-style group heads

    What else might I need?

    • Spacer
    • Group head gasket removing pickers

    Coffee Parts thoughts

    Silicone is a worthwhile option for a frequently serviced E61 group. Unlike conventional rubber seals that can become hard and brittle after prolonged exposure to heat, silicone remains softer and is generally much easier to remove when the next service comes around.

    The key is choosing the correct thickness. An 8 mm, 8.5 mm and 9 mm gasket can all look almost identical, but thickness affects where the portafilter locks into the group. Check the existing seal and the machine parts diagram before ordering.