GB/T 27572-2011
Rubber seals.Joint rings for pipelines for hot-water supply up to 110 ℃.Specification for the materials (English Version)

Standard No.

GB/T 27572-2011

Language

Chinese, Available in English version

Release Date

2011

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 27572-2011

Scope

This standard specifies the material requirements for vulcanized rubber seals for potable and non-potable hot water (up to 110 °C) supply pipes. The identification codes of various sealing rings specified in this standard are determined according to the type, use and requirements of the sealing rings. This standard also specifies general requirements for finished seal rings. Additional requirements required for a particular application shall be specified in the corresponding product standard. It should be noted that the performance of the pipe joint is related to the performance of the sealing ring material, the geometry of the sealing ring and the structure of the pipe joint. This standard shall be used in conjunction with product standards specifying the performance of pipe joints, as applicable. This standard applies to cast iron pipes, steel pipes, ceramic pipes, asbestos cement pipes, cement pipes, reinforced concrete pipes, plastic pipes and glass fiber reinforced plastic pipes and other pipe joint sealing rings. This standard applies to the elastomeric portion of composite or non-compound seals. For composite sealing rings made of materials with a hardness ranging from 76IRHD to 95IRHD, the elongation at break, compression set and stress relaxation requirements apply only when the material participates in the sealing function or requires long-term stability of the sealing ring. This standard does not apply to joint seals made of porous rubber materials or closed-cell materials as part of their construction.

GB/T 27572-2011 Referenced Document

• GB/T 12829 Rubber, vulcanized or thermoplastic. Determination of tear strength of small test pieces (Delft test pieces)
• GB/T 1685 Rubber,vulcanized or thermoplastic.Determination of stress relaxation in compression at ambient and at elevated temperatures
• GB/T 1690 Rubber,vulcanized or thermoplastic.Determination of the effect of liquids
• GB/T 17604-1998 Rubber--Recommendations for the workmanship of pipe joint rings--Description and classification of imperfections
• GB/T 2941 Rubber. General procedures for preparing and conditioning test pieces for physical test methods
• GB/T 3512 Rubber, vulcanized or thermoplastic.Accelerated ageing and heat resistance tests.Air-oven method*， 2014-12-22 Update
• GB/T 3672.1 Rubber-Tolerances of products--Part 1: Dimensional tolerances
• GB/T 528 Rubber,vulcanized or thermoplastic.Determination of tensile stress-strain properties
• GB/T 5576 Rubbers and latices--Nomenclature
• GB/T 6031 Rubber, vulcanized or thermoplastic—Determination of hardness (hardness between 10 IRHD and 100 IRHD)*， 2017-07-12 Update
• GB/T 7757 Rubber,vulcanized or thermoplastic-Determination of compression stress-strain properties
• GB/T 7759 Rubber, Vulcanized or thermoplastic--Determination of compression set at ambient elevated or low temperatures
• GB/T 7762 Rubber, vulcanized or thermoplastic.Resistance to ozone cracking.Static strain testing*， 2014-12-22 Update
• GB/T 9871-2008 Rubber,vulcanized or thermoplastic.Determination of aging characteristics by measurement of stress relaxation
• ISO 2285:2001 Rubber, vulcanized or thermoplastic - Determination of tension set under constant elongation, and of tension set, elongation and creep under constant tensile load

GB/T 27572-2011 history

• 2011 GB/T 27572-2011 Rubber seals.Joint rings for pipelines for hot-water supply up to 110 ℃.Specification for the materials