Seal gasket VIEGA 112103 — lip seal, 72 mm diameter

VIEGA lip seal 112103 is a 72 mm diameter gasket designed for sealing pipe connections and fittings in plumbing and HVAC systems. This elastic lip-type sealing element ensures tight junctions between components, reducing the risk of fluid leaks and maintaining reliable containment in water, heating and drainage installations. The gasket is intended for use as a replacement or original sealing part in compatible systems and standard fittings with a 72 mm sealing seat.

Advantages

The lip design provides a flexible, pressure-responsive seal that adapts to small irregularities in mating surfaces, improving leak resistance. Made to the manufacturer’s dimensional specifications for a 72 mm sealing diameter, the gasket offers consistent compression characteristics and long-term elasticity. Its straightforward shape allows quick installation and replacement without special tools, and it is compatible with common plumbing materials used in residential and commercial installations.

Suitable for

• Sealing pipe connections in domestic and commercial plumbing
• Use in heating and HVAC systems where a 72 mm gasket seat is specified
• Replacement of worn or damaged lip seals in compatible fittings
• Applications requiring a flexible elastomeric seal for water or non-aggressive fluids

Key specifications

• Sealing type: lip (elastic lip seal)
• Nominal diameter: 72 mm sealing diameter
• Primary use: pipe and fitting sealing for plumbing and HVAC
• Material properties: elastomeric, designed for compression and repeated sealing cycles
• Design form: ring/gasket suitable for insertion into standard 72 mm seats

How to use

Ensure mating surfaces and the gasket seat are clean and free of debris before installation. Press the lip seal evenly into the designated 72 mm seat so the sealing lip is properly oriented toward the fluid side. Assemble the connection according to the system manufacturer’s instructions and tighten fittings to the recommended torque to achieve correct compression of the lip. For replacement, remove the old gasket, inspect sealing faces for damage, and install the new lip seal following the same procedure.

Usage recommendations

Use the gasket in applications compatible with elastomeric seals and avoid exposure to aggressive chemicals or temperatures outside the component’s designed range. Replace the lip seal if visible cracking, hardening or deformation occurs to maintain leak-free operation.