Glass adaptor - gasket, D70, EPDM

The Strofix glass adaptor gasket D70 EPDM is a rubber sealing ring designed for use in Strofix D70 glass adaptor assemblies, placed between the stainless-steel cover or distancer and the glass panel surface. Manufactured from EPDM (ethylene-propylene-diene) rubber, Ø 68 mm outer diameter, Ø 12.2 mm internal hole, 2 mm thick. The D70 is the largest gasket size in the Strofix glass adaptor range.

The gasket cushions the contact between the metal adaptor components and the glass, preventing direct metal-to-glass contact that could cause stress cracks or scratches. EPDM rubber is weather resistant and water resistant with an operating temperature range of −40 °C to +110 °C and a hardness range of 40–90. Two gaskets are typically required per adaptor point — one on each side of the glass panel. The gasket is sold individually and is a flat type without a flange.

The Ø 12.2 mm internal hole is sized for M12 screws or studs to pass through. The gasket is sized for D70 glass adaptors (Ø 70 mm cover, Ø 68 mm gasket body).

Use cases:

• Sealing D70 glass adaptor assemblies on balustrades, partitions, and façades
• Replacing worn or compressed gaskets in existing Strofix D70 installations
• Cushioning glass-to-metal contact in large-format point fixing assemblies
• Stocking spare gaskets for maintenance of D70 glass fixing systems
• Outdoor installations requiring weather-resistant and UV-stable sealing

FAQ:

What is this gasket used for?

The gasket sits between the stainless-steel adaptor component (cover or distancer) and the glass panel in a Strofix D70 point fixing assembly. It prevents direct metal-to-glass contact, cushions clamping pressure, and provides a weather seal. Two gaskets are typically used per fixing point — one on each side of the glass.

What internal hole diameter does it have?

The internal hole is fixed at Ø 12.2 mm on this SKU, sized for M12 screws or studs. There is no selectable hole-size option.

What material is it made from?

EPDM (ethylene-propylene-diene) rubber. EPDM is weather resistant, water resistant, and UV stable, with an operating temperature range of −40 °C to +110 °C and a hardness range of 40–90.

Which Strofix glass adaptors is it compatible with?

This gasket is sized for the Strofix D70 glass adaptor range (Ø 70 mm cover, Ø 68 mm gasket body). It is not compatible with D30, D40, D50, D60, or other adaptor sizes.

Is this the largest gasket available?

Yes. The D70 gasket (Ø 68 mm) is the largest size in the Strofix EPDM gasket range. For smaller adaptor sizes, gaskets are available in D30, D40, D50, and D60.

How often should the gasket be replaced?

EPDM gaskets maintain their sealing properties over many years under normal conditions. Replacement is recommended if the gasket shows visible compression set, cracking, hardening, or no longer provides a seal against water ingress.

About glass adaptor gaskets

A glass adaptor gasket is a rubber or silicone washer that sits between the metal adaptor body and the glass surface, preventing direct steel-to-glass contact. It cushions the clamping force, compensates for minor surface irregularities and protects the glass edge around the drilled hole from chipping or stress cracking under load.

Strofix supplies glass adaptor gaskets in six sizes — D30, D40, 40×40, D50, D60 and D70 — in two materials: EPDM rubber and silicone. Both flat gaskets and gaskets with an integrated flange are available; flanged variants provide additional coverage around the hole perimeter.

The correct gasket depends on the adaptor diameter, the required material and whether a flanged or flat profile is needed for the assembly.