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O-ring seals – in perfect shape, part 3

Published on: 11.08.2020

Production of the O-ring groove

In addition to the correct selection of O-ring seals, the correct introduction of the O-ring groove is essential for the optimum sealing result. In the third part of our series ‘O-ring seals – in perfect shape’ we show you how you can save time during production with our countersink for O-ring seals, and increase the quality of the O-ring groove at the same time.

Comparison: Production of the O-ring groove with a milling cutter or countersink for O-rings

A direct comparison shows that considerable time is saved when the groove is introduced using a countersink for O-rings. Furthermore, the difference in quality is clearly seen in the following figure. When produced with a milling cutter, milling grooves are created which run at the bottom across the groove. This is not optimal for sealing. With our countersink for O-rings, on the other hand, concentric grooves are visible which make optimal sealing possible. This saves time and provides security.

O-ring groove made with a milling cutter

Milling grooves criss-crossing the groove bottom hinder optimal sealing.

O-ring groove made with a countersink for O-rings

Concentric grooves ensure optimal sealing.

Countersink for O-rings at Meusburger

The countersink for O-rings ensures good accessibility in pockets (e.g. inserts) right up to the edge.We offer two types of countersinks for O-rings:

WZB 12112 Carbide countersink for O-rings

  • Best groove surface quality
  • Suitable for materials up to 54 HRC thanks to high-quality TiAlN coating
  • Dimensions coordinated to provide a perfect fit for the O-ring seal on the outer diameter
  • Available in the 4 most common sizes

WZB 12112

WZB 32112 HSS Countersink for O-rings

  • Can also be used on column drilling machines with the WZB 32113 pilot for countersink
  • Available in 10 sizes

WZB 32112

With our cutting data calculator you get the right cutting parameters in no time.To save you the time-consuming selection and matching of O-ring dimensions, O-ring grooves and matching countersink, you will find the appropriate combinations in our groove recommendations.

Cutting data calculator O-Ring seal groove recommendations

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