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Rubber gasket material selection guide

Tid: 2022-01-06 Träffar: 3

Gaskets are mechanical seals designed to fill the gap between two mating surfaces. In fluid handling and processing equipment, they prevent process fluids from escaping the system and contaminants from entering the system. 

This ensures that the system does not waste valuable materials or suffer damage due to unnecessary materials.

In view of the key function of gaskets in fluid systems, it is very important to select the right gasket for the intended application. One of the key elements to keep in mind when designing and selecting a gasket is the material, which

can significantly affect the performance of the component. However, since there are many gasket materials to choose from, choosing the one that best suits your needs can be difficult or daunting. This is why you should work with 

experienced gasket manufacturers; they have the knowledge and skills to ensure that you receive the correct gasket.


Types of rubber gasket materials

Although gaskets can be made of many materials, one of the best options is rubber. There are many formulas and grades of rubber, each of which provides different characteristics, making it suitable for different applications:

Neopren

Nitril (Buna-N)

Etylen Propylen Dien Monomer (EPDM)

Silikongummi

Viton®

Styrene Butadiene Rubber (SBR)

Butylgummi

naturgummi

Inlaid rubber

Polyuretangummi

Food grade (FDA approved) rubber

 


Neopren

Neoprene is a synthetic rubber made by the polymerization of chloroprene. It is also called polychloroprene. Due to its resistance to acid, alkali, grease and oil, ozone, sunlight and weathering, it has a high degree of versatility 

and can be used in various harsh environments in various industries. It also has excellent resistance to bending and torsion, as well as a wide range of temperature adaptability (-40° F to +230° F, intermittent to +250° F).


 Nitril (Buna-N)

Nitrile rubber (also known as Buna-N or NBR) is the most commonly used elastic material for gaskets and seals. It has excellent resistance to acids, alkalis, gasoline, hydraulic fluids and petroleum-based compounds. It can also 

withstand a temperature range of -40° F to +212° F. When air permeability, water permeability and abrasion need to be considered, nitrile rubber is also an ideal choice.


Etylen Propylen Dien Monomer (EPDM)

EPDM rubber is a copolymer of ethylene and propylene. It can resist acid, alkali, aging, heat, oxidant, ozone, sunlight, steam and water damage. It also has the characteristics of color stability and high durability, suitable for use

in outdoor environments. It can withstand temperatures from -40° F to 250° F, intermittently to +275° F.


 Silikongummi

Silicone rubber is a high-performance elastomer. It has excellent high and low temperature characteristics and can withstand temperatures from -75° F to +500° F. It can also resist damage caused by aging, oxygen, ozone, 

ultraviolet light, water and weathering.


Viton®

Viton is a high-performance rubber material characterized by excellent chemical resistance and high temperature resistance. It also has high tensile strength and low compression set. It is suitable for temperatures ranging 

from -15° F to +400° F and intermittently to +500° F.


Styrene Butadiene Rubber (SBR)

SBR (also known as red rubber) is a synthetic copolymer of styrene and butadiene. It is a flexible and cost-effective choice for flange gaskets. The main characteristics include excellent tensile strength, impact strength, abrasi

-on resistance, heat resistance and low temperature flexibility. It is suitable for a temperature range of -67° F to +180° F.


Butylgummi

Butyl rubber is a copolymer of isobutylene and isoprene. It has excellent low gas, air and moisture permeability. In addition, it also has excellent abrasion resistance, acid resistance, alkali resistance, heat aging resistance, oxygen

resistance, ozone resistance, sunlight resistance, tear resistance and weather resistance. It is suitable for a temperature range of -60° F to +250° F.


naturgummi

Natural rubber is an elastic material extracted from the milky white sap or latex of rubber trees. It is also called gum rubber. It has excellent tensile strength, resilience, abrasion resistance and tear resistance, compression set and 

moldability. It also remains soft and flexible at low temperatures. It is suitable for a temperature range of -60° F to +175° F.


Inlaid rubber

Inlaid (fabric reinforced) rubber gasket Inlaid rubber refers to a rubber sheet material impregnated with cotton, glass fiber, polyester or nylon fabric. The cloth provides reinforcement to the material, improving its dimensional sta

-bility in high compressive load applications and its tear resistance during fixation.


Polyuretangummi

Polyurethane combines the elasticity of rubber with the strength and durability of metal. It has the greatest toughness and wear resistance of all elastic materials. It is superior to plastics, steel and other rubbers in terms of resista

-nce to chemicals, heat and solvents, and provides excellent tensile strength, compressive strength, tear strength, hardness, etc. It is suitable for a temperature range of -60° F to +180° F.


Food grade (FDA approved) rubber

FDA-marked gaskets in the food and beverage industry must be made of FDA-approved materials. These materials are considered safe for use in consumables because they exhibit inherent resistance to bacterial accumulation, a 

wide operating temperature range, and excellent chemical resistance. In addition, they are odorless and tasteless.


Need help choosing the right rubber material for your gasket application? Seek help from a custom gasket manufacturing expert! With rich manufacturing experience and capabilities, our team can provide high-quality gaskets, seals

or other rubber product solutions on time and on budget. To learn more about our custom gaskets, please contact us now. For pricing details, please request a quote.


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