Freudenberg Performance Sealing Materials

“Materials” are the foundation of our technology. Every day, people deal with products that possess seals and they generally know very little about the materials with which they are made. For example, plastic is a comparatively new material and has long been considered to be a “wonder substance”. But why is plastic so flexible and how are the various mixtures differentiated from one another? When is a silicone seal better than one made of polyurethane or rubber?

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Freudenberg Materials - Your Advantage

As a worldwide sealing technology leader – with vast resources and experience – Freudenberg is uniquely positioned to provide exceptional engineering, manufacturing and customer support wherever you do business. Every part is manufactured to the highest industry standards, with documented traceability.

With more than 170 years of experience, we offer the industry’s broadest lineup of standardized materials and continually develop new ones for customer applications. With our own development lab, our own in-house mixers and an array of 1,700-plus compounds made from 850 raw materials, our options are virtually unlimited.

Our team of experts is ready to help you today.

Material Overview

98 AU 30500 Polyurethan

With the new generation 98 AU 30500, we have considerably extended the limits of polyurethane in terms of hydrolysis, temperature and media resistance.

ACM

ACM elastomers are made of polar acrylic acids. As polar materials, they display good resistance to high-additive lubricating oils.

EPDM

Thanks to its excellent stability in water and aqueous solutions, EPDM is one of the most widespread materials in the food and pharmaceuticals industry with its share of approx. 70 percent.

FFKM - SIMRIZ®

With Simriz® perfluoroelastomer, Freudenberg Sealing Technologies offers the processing industry the High-End solution in materials technology for sophisticated applications regarding media and temperature stability.

FKM

Because of their wide range of compounding possibilities, FKM materials from Freudenberg Sealing Technologies offer great flexibility to suit the respective customer-specific application.

Fluoroprene® XP

Fluoroprene® XP is the premium allrounder amongst our quality materials, which unifies the advantages of EPDM and FKM particularly cost-effectively.

HNBR

HNBR is produced through the selective hydrogenation of NBR. The reactive double bonds are removed from NBR.

NBR Material Seal, NBR Oil Seal

It is used for oil- and fuel-resistant seals such as Simmerrings, O-rings and frame seals. The use of NBR marked the arrival of elastomers as a sealing material particularly in general industry.

NR

In its original form, latex is greasy and sticky. Natural rubber is an elastic polymer, built on isoprene as its monomer.

PA

Polyamides offer high strength, rigidity and durability with good chemical resistance and processability. They feature high resistance to wear and good anti-friction properties.

PAI

PAI is a thermoplastic that has high strength and stiffness up to 275°C while offering outstanding resistance to creep, wear, and chemical attack.

PEEK

PEEK offers similar chemical stability to PTFE, however has better mechanical properties. A material which is becoming increasingly popular in processing technology due to its stability at high temperatures.

POM

POM stands out for its high strength, hardness and rigidity over a wide range of temperatures. It even maintains its durability at low temperatures.

PTFE

PTFE from Freudenberg Sealing Technologies is very impressive with its great media stability and can be optimized for the respective application by blending it.

Polyurethane, Foam acoustic, safe packaging material

PUR, PU

Polyurethanes offer an alternative in cases where rubber elastomers cannot be used or where highly specialized elastomers are out of the question for cost-related reasons.

VMQ, PVMQ, FVMQ

VMQ silicone elastomers are used in demanding thermal applications, and, due to their purity, are especially suited for hygienic uses in the food and pharmaceutical industries.

Our Materials related Services

CIP-/SIP-Guide

The suitable tool for every requirement.

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Chemical Resistance Guide

Find suitable sealing materials for common process media.

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News and Stories on Our Materials

Source: Freudenberg Sealing Technologies

13.01.2025

Consider Seals at an Early Stage

In a white paper, Graebener Bipolar Plate Technologies outlines the key factors for the successful production of metallic bipolar plates.

16.12.2024

Custom Wiper Seal Becomes Essential Solution

See how a custom seal eliminated costly downtime for a food manufacturer, doubling seal lifespan and cutting maintenance costs to boost production efficiency.

Professor. Dr. Karsten Danielmeier, Deputy President of the GDCh with Dr. Ruth Bieringer, Vice President Material Technology at Freudenberg Sealing Technologies, and Professor Dr. Erhard Meyer-Galow, former President of the GDCh.

11.12.2024

A Winner: Freudenberg’s Material Innovation For More Battery Safety

Freudenberg Sealing Technologies is awarded the Meyer-Galow Prize for Business Chemistry 2024

19.09.2024

Seals without PFAS?

Fraunhofer IWM explores the impact of a potential PFAS ban with Freudenberg experts

enrober machine used to coat foods or confectionery items with chocolates

06.09.2024

Is Downtime Costing You Money?

Learn how our expertise allowed us to get a major food and beverage manufacturer in the United States back up and running at peak efficiency.

27.06.2024

Freudenberg Xpress® Delivers Rapid Solutions

Discover how Freudenberg Xpress® rapidly got a US steel mill back into production.

19.06.2024

Shaft Repair Sleeves: The Perfect Compliment

Don’t leave money on the table, our shaft repair sleeves deliver an excellent return on investment by extending the lifespan of your equipment’s shaft.

15.05.2024

Solving Seal Failures in the Construction Industry

Learn how our modified radial shaft seals (oil seals) solved sealing failures for construction compactors and power trowels.

29.04.2024

Simriz® 498 O-Ring – Rising to the Challenge

Learn how a US manufacturer used our Simriz® 498 O-rings to overcome seal degradation and reduce complexity in their pumps used in the oil & gas industry.