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This standard specification describes products composed of dense elastomeric silicone rubber gaskets and accessories for use in sealing and glazing applications in building constructions. The products are classified according to type, hardness, class, and surface. Types include tear resistant and compression set resistant products. Surface of the product shall be smooth, clean, free from foreign matter, and shall not allow adhesion of sealants. Silicone rubber shall be manufactured from virgin polymer and shall be free from visible internal porosity, surface defects, and dimensional irregularities. The compound color shall be black unless specified otherwise. Test methods for the product shall include low temperature flexibility, hardness, compression, tensile strength, ultimate elongation, heat aging, ozone resistance, tear strength, flame propagation, specific gravity, staining, and color tests.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
Significance and Use
This specification describes types (based on resistance to tearing and compression set), grades (based on durometer hardness), class (based on flame propagation requirements), and surfaces (based on surface characteristics) of products as listed in Section 4 for various applications. It is essential, therefore, that the applicable type, grade, class, and surface be specified, as well as other options stated, so that the proper product is provided for the intended use.
1.1 This specification describes products composed of dense elastomeric silicone rubber that are fabricated into gaskets and accessories (such as setting blocks, spacers, and shims) for use in sealing and glazing applications in building construction. These products are used to seal or serve as components of compression sealing systems between mechanically restrained surfaces in building construction and also as components in structural silicone sealant glazing systems.
1.2 The following precautionary statement pertains only to the test method portion, Section 10, of this specification. 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.
1.3 Test Method C1166, as referenced in this specification, should be used to measure and describe the properties of materials, products, or assemblies in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However, results of this test may be used as elements of a fire risk assessment that takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use.
1.4 The values stated in metric (SI) units are to be regarded as the standard. The inch-pound values given in parentheses are provided for information purposes only.
1.5 The committee with jurisdiction over this standard is not aware of any comparable standards published by other organizations.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C717 Terminology of Building Seals and Sealants
C1087 Test Method for Determining Compatibility of Liquid-Applied Sealants with Accessories Used in Structural Glazing Systems
C1166 Test Method for Flame Propagation of Dense and Cellular Elastomeric Gaskets and Accessories
D395 Test Methods for Rubber Property--Compression Set
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers--Tension
D573 Test Method for Rubber--Deterioration in an Air Oven
D624 Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers
D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
D925 Test Methods for Rubber Property--Staining of Surfaces (Contact, Migration, and Diffusion)
D1149 Test Methods for Rubber Deterioration--Cracking in an Ozone Controlled Environment
D1566 Terminology Relating to Rubber
D2137 Test Methods for Rubber Property--Brittleness Point of Flexible Polymers and Coated Fabrics
D2240 Test Method for Rubber Property--Durometer Hardness
D3182 Practice for Rubber--Materials, Equipment, and Procedures for Mixing Standard Compounds and Preparing Standard Vulcanized Sheets
Rubber Manufacturers Association (RMA) StandardRubberHandbo
ICS Number Code 83.140.50 (Seals)
UNSPSC Code 31400000(Gaskets); 31410000(Seals)