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GB/T 5720-2008 English PDF

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Q: Should I purchase the latest version GB/T 5720-2008?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 5720-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$299.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 5720-2008: Test methods for rubber O-rings
Status: Valid

GB/T 5720: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 5720-2008	299	Add to Cart	3 days	Test methods for rubber O-rings	Valid
GB/T 5720-1993	479	Add to Cart	4 days	Test methods for rubber O rings	Obsolete

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GB/T 13871.1 GB/T 10708.3 GB/T 5721 GB/T 3672.2 GB/T 29992 GB/T 3672.1

Basic data

Standard ID: GB/T 5720-2008 (GB/T5720-2008)
Description (Translated English): Test methods for rubber O-rings
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G43
Classification of International Standard: 83.140.50
Word Count Estimation: 13,139
Date of Issue: 2008-06-04
Date of Implementation: 2008-12-01
Older Standard (superseded by this standard): GB/T 5720-1993
Regulation (derived from): National Standard Approval Announcement 2008 No.9 (Total No.122)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard provides a solid vulcanized rubber O- ring in the size measurement, hardness, tensile properties, hot air aging, constant strain compression, corrosion tests, resistance to liquids, shrinkage, , cold compression stress relaxation tests and trials density methods. This standard applies to solid vulcanized rubber O rings (hereinafter referred to as O -rings).

GB/T 5720-2008: Test methods for rubber O-rings

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test methods for rubber O-rings ICS 83.140.50 G43 National Standards of People's Republic of China Replacing GB/T 5720-1993 Test methods for rubber O rings Posted 2008-06-04 2008-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces 5720-1993 "O-shaped rubber O-ring test method" GB/T . This standard and GB/T 5720-1993 The main differences are. --- Remove A "O-shaped rubber seal standard sample" Appendix; --- Increasing the low temperature performance test; --- Remove tensile set measurement; --- The length of the test liquid resistant O-ring fragment sample from (90 ± 2) mm to at least 50mm; --- 5.4.1.2 bar will "height limiter is 75% Sample-sectional diameter" to "the hardness of the sample (10 ~ 80) IRHD time, Height limiter 75% cross-sectional diameter of the specimen, the hardness of the sample at the time (81 ~ 89) IRHD, a height limiter for the test Like cross-sectional diameter of 85%, when the hardness of the sample (90 ~ 95) IRHD, a height limiter for the sample cross-sectional diameter 90%. "; --- Increase the corrosion resistance of the sample and the jig and the result of the determination shown icon. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Rubber and rubber products sealing products Standardization Technical Committee Technical Committee (SAC/TC35/SC3) Centralized. This standard was drafted. Northwest Rubber Plastic Research and Design Institute, Zhejiang Institute of Quality and Technical Supervision and Inspection. The main drafters of this standard. High Fall, Shen, Cao Yuanli. This standard replaces the standards previously issued as follows. --- GB/T 5720-1985, GB/T 5720-1993. Test methods for rubber O rings

1 Scope

This standard specifies the solid vulcanized rubber O-ring dimensional measurement, hardness, tensile properties, the hot air aging, constant compression deformation Permanent deformation, corrosion test, resistance to liquid, density, shrinkage, and low temperature test Test Method for Compressive stress relaxation. This standard applies to solid vulcanized rubber O-ring (hereinafter referred to as O-rings).

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to this part of the research agreement Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 528-1998 vulcanized rubber or thermoplastic rubber tensile stress strain properties (eqv ISO 37.1994) GB/T 533-1991 vulcanized rubber or thermoplastic rubber measured density (ISO 2781.2007, IDT) GB/T 1690-1992 Test method for liquid-resistant vulcanized rubber (neq ISO 1817) GB/T 2941-2006 rubber physical test method for preparing and conditioning General procedures (ISO 23529.2004, IDT) GB/T 3452.2-2007 hydraulic and pneumatic rubber O-rings - Part 2. appearance quality inspection standard (ISO 3601-3. 2005, IDT) GB/T 3512-2001 vulcanized rubber or thermoplastic rubber hot air and heat accelerated aging test (eqv ISO 188.1998) GB/T 6031-1998 Determination of vulcanized rubber or thermoplastic rubber hardness (10 ~ 100IRHD) (idt ISO 48.1994) GB/T 7758-2002 vulcanized rubber low temperature performance measured temperature retraction procedure (TR test) (ISO 2927.1997, IDT) GB/T 7759-1996 vulcanized rubber, thermoplastic rubber at room temperature, high and low temperature compression set measurement (eqv ISO 815. 1991) GB/T 13643-1992 Rubber, vulcanized or thermoplastic Determination of compression stress relaxation (cyclic sample) (eqv ISO 6059. 1987) HG/T 2369-1992 Rubber Plastic tensile testing machine technical conditions

3 Sample Requirements and test conditions

3.1 Sample Requirements 3.1.1 Sample preparation conducted in accordance with the provisions of GB/T 2941-2006 of. 3.1.2 appearance quality specimens shall conform to GB/T 3452.2-2007 in N-level requirements. 3.1.3 hardness, tensile properties, the hot air aging, compression set constant deformation, the test of corrosion resistance, liquid, density, shrinkage, low-temperature test Test specimen and compression stress relaxation see 5.1.2,5.2.2,5.3.2,5.4.2,5.5.2,5.6.2,5.7 respectively. 2,5.8.2,5.9.2 and GB/T 13643-1992 4.1.3. 3.2 Test conditions Temperature and time of sample environmental regulation and testing should be performed in accordance with GB/T 2941-2006 requirements.

4 measuring sample size

Measuring the sample size should be GB/T 2941-2006 the provisions of Chapter 7 conducted a cross-sectional diameter measured by the method A, using an inner diameter Method D measurement. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 5720-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 5720-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 5720-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 5720-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 5720-2008?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 5720-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.