Inflatable silicone seals

Custom-made inflatable silicone seals for autoclaves, dynamic seals for laboratories, metallic or silicone valves.

Our inflatable seals provide total sealing against gases, liquids and solids.

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The Silicone and PTFE Factory

MEREFSA is expert in manufacturing products with:

SILICONE
PTFE
MESHES AND FABRICS

Products

Industrial sectors

We manufacture products for industrial sectors that carry out very diverse activities. Our commercial, design and quality team is able to advise and provide optimal solutions with the highest quality and speed to any product requested by our customers.

ILUMINATION
TRANSPORT
CONSTRUCTION
NUTRITION
HOME APPLIANCES
INDUSTRIAL SUPPLIES
TEXTILE
PETROCHEMICAL
MACHINERY MANUFACTURERS
CHEMICAL
PHARMACIST

Explore Sectors

Merefsa at InnoTrans from September 20th to 23rd 2022

At InnoTrans 2022 we will be presenting the latest developments in rail transport worldwide.

Visit us at the stand 120 | Hall 8.1., we will present all Chlorine Free Silicone formulations.

Get your ticket for the world's most important International Railway Fair in Berlin!

We are waiting for you!

InnoTrans 2022

Extrusion, molding, welding and silicone die cutting

With near to 50 years of experience and more than 4000 different dies, we are one of the largest silicone manufacturers by extrusion, with all types and shapes of silicone profiles at your disposal.

Silicone Profile Finder

Machining

Our machining workshop, with manual lathes, numerical control lathes, automatic and CNC lathes, allows us to manufacture any type of part in any technical plastic.

Machining

Extrusion of silicone profiles and tubes

With about 50 years of experience in the extrusion of cords, tubes, profiles, sheets, bands and about 4000 different rows, we are one of the largest and most specialized silicone transformers in southern Europe. We export to the five continents, with the firm commitment of quality and service to our customers.

It is company policy to reinvest our benefits, in the acquisition and purchase of new technologies, increasing our machinery park year after year.

Silicone Profile Finder

Manufacture of silicone compounds for extrusion and moulding

In our compounding facility we prepare the silicone raw material and add it with the necessary chemicals according to our customers' needs.

We manufacture compounds to measure, for those customers who need specific solutions. Tell us your requirements and we will help you to find your silicone.

Starting from 25 kg batches, we can manufacture any compound and colour.

Specialists in processes with silicone and PTFE

At MEREFSA we are specialists in all processes related to silicone and PTFE.

DESIGN
LABORATORY
REPASTED
EXTRUSION
CUTTING
MOLDING
CALENDERING
MACHINING
LATHE
ENGRAVING

Explore Processes

Fairs and Exhibitions

MEREFSA regularly participates in some of the most important trade fairs. As well as in events of different industrial sectors both at European and global level.

Videos

Wire EDM process - Silicone extrusion dies - Merefsa

Manufacture of dies by EDM wire EDM. We show the EDM wire EDM process in which we visualize how a die is manufactured to extrude a silicone profile from a metal support which is given the previously designed shape. Our machining plant has the latest technology in wire EDM +GF+ machines. Electrical discharge machining EDM is an extremely precise manufacturing process that uses electrodes, dielectric fluid and an electric current to cut metals. This video shows all the processes involved in the manufacture of a silicone extruded profile: the design process in the Technical Office, the process of creating the die for the wire EDM extruder nozzle and the final extrusion of the weatherstrip. Merefsa is one of the largest manufacturers of silicone profiles in Spain. They comply with FDA certification. With our extensive experience, the Technical Office and machining departments design and can manufacture dies to produce this product in almost any geometry and specifications. We have nearly 4,000 different silicone profile extrusion dies, also known as silicone weatherstripping, including shapes as diverse as T, h, e, P, L, U, OO, autoclave, scraper, etc. The main applications of silicone profiles are sealing gaskets in all types of industries and processes, although the field of application in industry is almost infinite. It is used as electrical insulation, inflatable gaskets for autoclaves, sealing gaskets for the lighting industry, gaskets for insulating oven doors, enclosure gaskets for aluminum profiles, gaskets for dyeing autoclaves in the textile industry, welding profiles in the manufacture of plastic bags, embellishing profiles in any industry, etc. We can also manufacture them in detectable silicone, steam, platinum, fluorinated, etc. and approved with FDA certification, being perfect for use in the food and pharmaceutical sector.