TECHNICAL SUPPORT - GASKETS

Development and production of components for machine tools since 1949.

Classification - Gaskets

VAJ gaskets are made to order, designed to meet specific application needs in sectors such as hydraulics, pneumatics, food, chemical and automotive. We offer customized solutions for:

Static gaskets: for sealing between fixed surfaces
Dynamic seals: for applications with rotary or translational movements
Special gaskets: designed for extreme conditions of temperature, pressure or chemical exposure

Thanks to our experience and production flexibility, we can produce gaskets in a wide range of materials, shapes and sizes, even for small series or prototypes.

Material and thermal compatibility - Gaskets

La scelta del materiale è fondamentale per garantire la durata e l’efficacia della guarnizione. Di seguito una tabella comparativa dei principali materiali utilizzati:

Material	Typical chemical resistance	Temperature range
NBR Nitrile Rubber	Mineral oils, greases, light fuels	-30°C / +100°C
EPDM	Hot water, steam, atmospheric agents, UV	-40°C / +140°C
Neoprene	Moderate oils, atmospheric agents	-35°C / +110°C
Silicone	High temperatures, sterilization, food	-60°C / +200°C
FKM (Viton®)	Oils, solvents, fuels, aggressive chemical agents	-20°C / +210°C
Natural rubber	Abrasion, flexibility, air resistance	-40°C / +80°C

Assembly - Gaskets

To ensure an effective and long-lasting seal:

Make sure the contact surfaces are clean and free from imperfections
Check that the gasket is correctly positioned and does not undergo torsion or deformation during assembly
Apply compatible lubricants if necessary to facilitate installation and prevent damage
In dynamic applications, consider the use of guidance or support systems to reduce wear

Troubleshooting - Gaskets

Problem	Possible cause	Recommended action
Loss of seal	Damaged or worn gasket	Replace the gasket and check the operating conditions
Break or tear	Incorrect installation or unsuitable material	Review the assembly process and select a compatible material
Swelling	Chemical incompatibility	Check the compatibility between the gasket material and the fluids used
Hardening or cracks	Aging of the material or exposure to extreme temperatures	Replace the gasket and consider materials with higher thermal resistance

Notes - Gaskets

We offer technical support for the selection of the most suitable material based on specific application needs. Possibility of producing prototypes and small series for preliminary tests and validations.