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  • ASTM
    D3903-03(2007) Standard Specification for Rubber Seals Used in Air-Heat Transport of Solar Energy Systems
    Edition: 2007
    $50.00
    Unlimited Users - 1 Loc per year

Description of ASTM-D3903 2007

ASTM D3903 - 03(2007)

Standard Specification for Rubber Seals Used in Air-Heat Transport of Solar Energy Systems

Active Standard ASTM D3903 | Developed by Subcommittee: D11.37

Book of Standards Volume: 09.02




ASTM D3903

Abstract

This specification establishes the general requirements for two types, two classes, and seven grades of rubber seals used in solar energy systems employing air-heat transport, such as duct and damper seals. Particular applications may necessitate other requirements that would take precedence over these requirements when specified. The design requirement stated herein pertains only to permissible deflections of the rubber during thermal expansion or contraction of the seal in use and the tolerances in dimensions of molded and extruded seals. This specification does not address the requirements pertaining to the fabrication or installation of the seals. Type C seals are intended for use in cold climates, while Type W seals are intended for use in warm climates. Grade designations (Grades 2 to 8) represent differing degrees of hardness. Finally, Class PS are preformed rubber seals, while Class SC are sealing compounds. Each class shall conform to individually specified values of the following requirements: ultimate elongation; compression set at specified times and temperatures; resistance to heating (hardness and ultimate elongation change, and volatiles lost); resistance to ozone; resistance to low temperature; and adhesion loss.

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.

1. Scope

1.1 This specification covers the general requirements for the rubber seals used in solar energy systems employing air-heat transport. Examples are duct and damper seals. Particular applications may necessitate other requirements that would take precedence over these requirements when specified.

Note 1Rubber seals for the collector are covered in Specifications D 3667 and D 3771 .

1.2 Design requirement pertains only to permissible deflections of the rubber during thermal expansion or contraction of the seal in use and the tolerances in dimensions of molded and extruded seals.

1.3 This specification does not include requirements pertaining to the fabrication or installation of the seals.

1.4 The values stated in SI units are to be regarded as the standard.

1.5 The following safety hazards caveat pertains only to the test methods portion, Section 10, of this specification: This standard does not purport to address the safety concerns 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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C661 Test Method for Indentation Hardness of Elastomeric-Type Sealants by Means of a Durometer

C717 Terminology of Building Seals and Sealants

C719 Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)

D395 Test Methods for Rubber Property--Compression Set

D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers--Tension

D865 Test Method for Rubber--Deterioration by Heating in Air (Test Tube Enclosure)

D1149 Test Methods for Rubber Deterioration--Cracking in an Ozone Controlled Environment

D1229 Test Method for Rubber Property--Compression Set at Low Temperatures

D1349 Practice for Rubber--Standard Temperatures for Testing

D1415 Test Method for Rubber Property--International Hardness

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

D3183 Practice for Rubber--Preparation of Pieces for Test Purposes from Products

D3667 Specification for Rubber Seals Used in Flat-Plate Solar Collectors

D3771 Specification for Rubber Seals Used in Concentrating Solar Collectors

G7 Practice for Atmospheric Environmental Exposure Testing of Nonmetallic Materials

G151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources

G155 Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials

Other Standards

RMAHandbookRu

Keywords

air-heat transport; rubber seals; solar energy systems; Air-heat transport devices (solar); Rubber--specifications; Rubber seals--specifications; Solar heating/cooling systems--specifications; Solar materials/applications--specifications;


ICS Code

ICS Number Code 21.140 (Seals, glands)


DOI: 10.1520/D3903-03R07

ASTM International is a member of CrossRef.

ASTM D3903

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