Innovative High-Temperature Sealing Solutions by Knarr

High-temperature sealing Knarr expands sealing solutions with stainless steel screw plug

2025-02-04 Source: Knarr 1 min Reading Time

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In order to avoid distortion of the plastic part, a homogeneous temperature balance in the mould is crucial. The positioning of the cooling channels plays an important role. Once this is done, the right sealing becomes the next challenge. Knarr offers new solutions to tackle it.

The screw plug is now also available as stainless steel version.(Source: Knarr) — The screw plug is now also available as stainless steel version.
(Source: Knarr)

Knarr has expanded its range of sealing solutions with a new stainless steel version of its screw plug, designed to withstand high temperatures. Equipped with an FKM O-ring, the plug can handle water temperatures up to 180°C and oil up to 200°C, providing a durable and reliable seal without the need for additional sealants. The high-temperature O-ring is also available as a separate spare part and will be integrated into future brass screw plug designs.

As an alternative to the known options, Knarr offers a Screw plug (70943) equipped with an O-ring. Without any additional sealant, it provides an extremely reliable and durable seal. The screw can be mounted very quickly and easily without any preparatory work and can also be reused after disassembly without time-consuming cleaning.

For the sealing plug with O-ring (72078) Knarr provides the Torx version. Especially when mounting in hard-to-reach positions, Torx offers the clear advantage that the plug stays on the screwdriver better and slipping is avoided. This protects the inner profile and makes later dismantling easier. The plug is designed for a maximum water temperature of 100°C (oil 180°C).

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