Abstract 3D render of swirling orange, ochre and green textures, like a close-up of layered material

Alef Portal

Flat gaskets cut to size: configure, nest and order online.

From a drawing to a priced part.

Alef Portal is the online shop for custom flat gaskets.

Choose a norm gasket to EN 1514‑1 or ASME B16.21, a ring, rectangle or oval by its dimensions, or upload a DXF. Alef nests the parts on sheet stock and builds the price line by line before you order: material, cutting, set-up, certificate, shipping. Alpha Dichtungstechnik GmbH manufactures the parts.

Configure a part

Alef Portal is open as a preview: sign-in, live orders and payments are not yet switched on.

Abstract render of a red coral-like form among pink blossoms, green panels and thin blue lines

From plate to pipeline.

Twelve gaskets nested on one sheet, cut, stacked, shipped — and one of them bolted between two flanges.

How it works

Twelve gaskets are nested on one sheet, cut, stacked, shipped — and one of them seals a flange. Every step is a hand-off where time and material get lost. We make each one visible and measurable. Drag to turn, shift-drag to pan, pinch or ctrl-scroll to zoom, double-click to reset.