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solid rubber gasket material

Solid Rubber

Rubber is probably the most widely used gasket material. Rubber is offered in many different styles and grades to meet many applications’ needs. In addition, rubber is commonly available “off the shelf” in most styles, grades and thicknesses.

Synthetic rubbers are generally made from petroleum-based by-products. Alternatively, natural rubber is derived from latex from Rubber trees which are found in Thailand and Indonesia.

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Common Solid Rubber Materials 

Many rubber products are offered in standard commercial grades as well as high-grade. Generally, high-grade materials will have a higher percentage of the actual product (ie Nitrile) and may have a higher tensile strength and/or operating temperature range.

A list of the most commonly used rubbers and their characteristics are listed below.

Rubber

Durometer

Thickness

Temperature Range

Tensile Strength (PSI)

Overview

Butyl

 

40 - 80

.015-1.00

-40 - +225

1500

Excellent dielectric properties; low permeability to air and gases; moderate UV, ozone and oxidation resistance

EPDM

 

40 - 80

.015-1.00

-40 - +300

900

Excellent UV, ozone and oxidation resistance; also abrasion resistant

EPDM - FDA approved

 

40 - 80

.015-1.00

-40 - +300

900

FDA approved ingredients for use around food; white color

EPDM - NSF 61 Approved

 

40 - 80

.015-1.00

-40 - +300

900

NSF 61 approved for potable water applications

Epichlorohydrin 

 

60-70

.015-1.00

-40 - +250

1200

High-end rubber; excellent resistance to oil and grease; broad operating temp range; broad chemical compatibility

Fluorosilicone

 

40 - 70

.015-1.00

-60 - +500

900

Excellent temp range; resistant to fuels and solvents; naturally resistant to ozone

Gum Rubber / Natural Rubber

40

.031 - 1.00

-60 - +220

2300

Good physical properties and low temp range; greater elongation than most rubbers; very resilient

Neoprene (Chloroprene)

 

30 - 80

.015 - 1.00

-40 - +200

500

Low cost, general purpose material; moderate oil, grease, solvent and chemical resistance

Nitrile, BUNA-N, NBR

 

30 - 90

.015 - 1.00

-30 - +220

850

Widely used for its resistant to most oil, grease, water and hydraulic fluid.  It is also compatible with certain chemicals

Nitrile, FDA Food Grade

 

50 - 70

.015 - 1.00

-30 - +220

       800        

FDA approved ingredients for use around food; white color

SBR

 

60 - 80

.015 - 1.00

-40 - +220

500

Excellent abrasion, wear and water resistance; also resistant to certain chemicals

Silicone - Commercial Grade

 

30 - 80

.015 - 1.00

-80 - +450

600

Excellent high and low-temperature range; excellent ozone, oxidation and water resistance

Silicone - Electrically Conductive

 

60

.015-1.00

-80 - +500

800

Protection against electrostatic discharge and EMI

Silicone - FDA Approved

 

30 - 70

.015-1.00

-80 - +450

700

FDA approved ingredients for use around food

Silicone - Fibreglass Reinforced

 

70

      .015-1.00           

-80 - +500     

1300

Increased mechanical strength - up to 1300 PSI

Silicone - Medical Grade

 

40 - 70

     .015-1.00      

-80 - +450

1200

USP Class Testing approved for use in medical devices

Urethane

 

60 - 90

     .015-1.00      

-40 - +200   

    5000      

Most abrasion resistance and strength while maintaining stability and flexibility

Viton; FKM

 

50 - 80

.015-1.00

-20 - +400

1000

Higher-end material for broad use; good oil, fuel and chemical resistance; good aging properties; excellent UV, ozone and oxidation resistance

  • PSA available on all products. PSA is available in acrylic-based, rubber-based and acrylic-rubber blends. PSA also available in transfer and double-coated options.
  • Standard thicknesses available in -.015, .031, .062, .093, .125, .187, .250, .312, .375, .500, .625, .750, 1.00.
  • Custom and metric thicknesses also available
  • Standard durometer for most rubber products: 30, 40, 50, 60, 70, 80, 90

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