ASTM F2468-05(2011) - 1.5.2011
 
Significance and Use

The purpose of this classification system is to provide a method of adequately identifying silicone adhesives and sealants through the use of a line call-out designation.

This classification system was designed to permit the addition of property values for future silicone adhesives and sealants.

 
1. Scope

1.1 This classification covers silicone adhesives and sealants intended for but not limited to sealing and retaining metallic and nonmetallic component assemblies in transportation applications. The materials cure to an elastomeric state by their specified cure system and mechanism.

Note 1—The classification system may serve many of the needs of industries using silicone materials. This classification is subject to revision, as the need requires; therefore, the latest revision should always be used.

1.2 This classification is intended to be a means of classifying silicone materials. It is not intended for engineering design purposes.

1.3 It is not the intent of this classification to include pressure-sensitive or hot-melt adhesives.

1.4 In all cases in which the provisions of this classification system would conflict with the referenced ASTM standard for a particular method, the latter shall take precedence.

1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6 The following safety hazards caveat pertains only to the test methods portion, Section 7, of this classification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

 
2. Referenced Documents

UL 94

Flammability

SAE J369

Flammability of Polymeric Interior Materials--Horizontal Test Method

D1415-18

Standard Test Method for Rubber Property´International Hardness

D792-20

Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement

D4800-94(2023)

Standard Guide for Classifying and Specifying Adhesives

D3182-21a

Standard Practice for Rubber—Materials, Equipment, and Procedures for Mixing Standard Compounds and Preparing Standard Vulcanized Sheets (Includes all amendments and changes 11/12/2021).

D2240-15(2021)

Standard Test Method for Rubber Property—Durometer Hardness

D1898-68(1989)

Standard Practice for Sampling of Plastics (Withdrawn 1998)

D1566-21a

Standard Terminology Relating to Rubber (Includes all amendments and changes 11/10/2021).

D907-15(2023)

Standard Terminology of Adhesives

D1002-10(2019)

Standard Test Method for Apparent Shear Strength of Single-Lap-Joint Adhesively Bonded Metal Specimens by Tension Loading (Metal-to-Metal)

D1053-92a(2018)

Standard Test Methods for Rubber Property´Stiffening at Low Temperatures: Flexible Polymers and Coated Fabrics (Includes all amendments and changes 9/19/2018).

D1084-16(2021)

Standard Test Methods for Viscosity of Adhesives

D1349-14(2019)

Standard Practice for Rubber´Standard Conditions for Testing

C679-15(2022)

Standard Test Method for Tack-Free Time of Elastomeric Sealants

D149-20

Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies

D150-22

Standard Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation

D257-14(2021)e1

Standard Test Methods for DC Resistance or Conductance of Insulating Materials (Includes all amendments and changes 5/6/2021).

D412-16(2021)

Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—Tension

D471-16a(2021)

Standard Test Method for Rubber Property—Effect of Liquids (Includes all amendments and changes 6/25/2021).

D573-04(2019)

Standard Test Method for Rubber´Deterioration in an Air Oven

D618-21

Standard Practice for Conditioning Plastics for Testing

D624-00(2020)

Standard Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers