JB/T 53389-1999
Medium and Light Mechanical Seals - Product Quality Grading (Internal Use)
中、轻型机械密封 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 机械密封产品质量要求 → 4 检验方法 → 5 抽样 → 附录A Foreword → 1 Scope → 2 Normative References → 3 Quality Requirements for Mechanical Seal Products → 4 Inspection Methods → 5 Sampling → Appendix A
Scope
This standard specifies the quality grade indicators, inspection and sampling methods for medium and light mechanical seal products. This standard is applicable to medium and light mechanical seal products, where the sealed fluid is liquid. This standard is not applicable to metal bellows mechanical seals.
本标准规定了中、轻型机械密封产品质量等级指标及检验和抽样方法。本标准适用于中、轻型机械密封产品，其被密封的流体为液体。本标准不适用于金属波纹管机械密封。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection agencies use this standard to grade and inspect medium and light mechanical seals. It defines key indicators such as leakage rate, wear rate, and service life to classify products into qualified, first-class, or premium grades. This standard is critical for ensuring reliable sealing performance in pumps, compressors, and similar equipment.
机械密封制造商和质检机构使用本标准来对中、轻型机械密封产品进行质量分等和检验。它通过规定泄漏量、磨损量、寿命等关键指标，确保产品达到合格、一等或优等品等级。该标准对于保证机械密封在泵、压缩机等设备中的可靠运行至关重要。
AI Summary AI generated
This standard specifies quality grade indicators, inspection, and sampling methods for medium and light mechanical seals used for liquid sealing, excluding metal bellows types. Products are classified into qualified, first-class, and premium grades based on leakage rate, wear rate, service life, and disassembly inspection pass rates. Inspection methods include running tests, static pressure tests, and gas seal tests, with sampling plans determined by product type and quantity.
本标准规定了中、轻型机械密封产品的质量等级指标、检验和抽样方法，适用于密封液体介质的机械密封，但不包括金属波纹管型。标准将产品分为合格品、一等品和优等品，依据泄漏量、磨损量、寿命及解体检测项次合格率等指标进行评定。检验方法包括运转试验、静压试验和气密封试验，抽样方案根据产品类型和数量确定。
Key Sentences extracted from text
本标准规定了中、轻型机械密封产品质量等级指标及检验和抽样方法。
机械密封产品应按GB/T 6556、JB/T 6619.1、JB/T 4127.1 制造。
机械密封产品质量分等按表1、表2、表3、表4 的规定。
技术引进产品的质量考核按引进要求或合同进行，但产品质量分等按本标准评定，检验项目按表5 中的第2、第3、第4 项要求。
抽样时产品样本数按表6，但在用户中抽样及突击性抽查时，不受此限。
This standard specifies the quality grade indicators, inspection and sampling methods for medium and light mechanical seal products.
Mechanical seal products shall be manufactured in accordance with GB/T 6556, JB/T 6619.1, and JB/T 4127.1.
The quality grading of mechanical seal products shall be in accordance with the provisions of Tables 1, 2, 3, and 4.
The quality assessment of technology-introduced products shall be carried out according to the introduction requirements or contract, but the product quality grading shall be evaluated according to this standard, and the inspection items shall be in accordance with items 2, 3, and 4 in Table 5.
The number of product samples during sampling shall be in accordance with Table 6, but this limit does not apply when sampling from users or conducting surprise inspections.
Standard Timeline
Changes from replaced version:
- 本标准是对JB/T 53389—94《中、轻型机械密封 产品质量分等》的修订。
- 本标准自实施之日起代替JB/T 53389—94。
- This standard is a revision of JB/T 53389-94 'Medium and Light Mechanical Seals - Product Quality Grading'.
- This standard replaces JB/T 53389-94 from the date of implementation.