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This specification covers the physical property requirements of elastomeric seals (gaskets) used to seal the joints of precast concrete structures used in gravity and low head pressure applications. The seals shall be classified as: Class A; Class B; Class C; Class D; and Class E. All gaskets shall be extruded or molded in such a manner that any cross-section will be dense, homogeneous, and free of porosity, blisters, pitting, or other imperfections. The gaskets shall be fabricated from an elastomeric material meeting the appropriate classification physical property requirements. The following test methods shall be performed to conform to the specified requirements: tensile strength and elongation; hardness; compression set; accelerated aging; water absorption; ozone resistance; oil immersion testing; and splice strength classification.
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.
1.1 This specification covers the physical property requirements of elastomeric seals (gaskets) used to seal the joints of precast concrete structures conforming to Specifications C14, C14M, C118, C118M, C361, C361M, C443, C443M, C505, or C505M used in gravity and low head pressure applications.
1.2 Requirements are given for natural or synthetic rubber gaskets, or a combination of both.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 The following precautionary caveat pertains only to the test method portion, Section 8, 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C14 Specification for Nonreinforced Concrete Sewer, Storm Drain, and Culvert Pipe
C14M Specification for Nonreinforced Concrete Sewer, Storm Drain, and Culvert Pipe (Metric)
C118 Specification for Concrete Pipe for Irrigation or Drainage
C118M Specification for Concrete Pipe for Irrigation or Drainage (Metric)
C361 Specification for Reinforced Concrete Low-Head Pressure Pipe
C361M Specification for Reinforced Concrete Low-Head Pressure Pipe (Metric)
C443 Specification for Joints for Concrete Pipe and Manholes, Using Rubber Gaskets
C443M Specification for Joints for Concrete Pipe and Manholes, Using Rubber Gaskets (Metric)
C497 Test Methods for Concrete Pipe, Manhole Sections, or Tile
C497M Test Methods for Concrete Pipe, Manhole Sections, or Tile [Metric]
C505 Specification for Nonreinforced Concrete Irrigation Pipe with Rubber Gasket Joints
C505M Specification for Nonreinforced Concrete Irrigation Pipe With Rubber Gasket Joints (Metric)
C822 Terminology Relating to Concrete Pipe and Related Products
D395 Test Methods for Rubber Property--Compression Set
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers--Tension
D471 Test Method for Rubber Property--Effect of Liquids
D573 Test Method for Rubber--Deterioration in an Air Oven
D1149 Test Methods for Rubber Deterioration--Cracking in an Ozone Controlled Environment
D1566 Terminology Relating to Rubber
D2240 Test Method for Rubber Property--Durometer Hardness
D2527 Specification for Rubber Seals--Splice Strength
ICS Number Code 21.140 (Seals, glands)
UNSPSC Code 31400000(Gaskets)